{"data":{"slug":"soundcore-p40i","type":"earbuds","brand":"soundcore","name":"P40i","aliases":["A3955","Soundcore P40i","Anker Soundcore P40i"],"release_date":"2024-02","url":"https://arkivo.dev/earbuds/soundcore-p40i","specs":{"series":null,"model_numbers":["A3955","A3955Z11","A3955Z21","A3955Z31","A3955ZQ1","A3955N11","A3955N21","A3955N31","A3955NQ1"],"gtins":["194644186340","194644190989","194644190965","194644190958"],"announce_date":null,"status":"available","predecessor":null,"successor":"soundcore-p42i","launch_price_usd":null,"launch_price_eur":null,"markets":["US","JP"],"colors":["Black","Oat White","Navy Blue","Purple","Off White","Navy"],"manufacturer_url":"https://us.soundcore.com/products/p40i-a3955011","spec_sheet_url":null,"manual_url":"https://lp.ankerjapan.com/hubfs/aoos/manual/A3955Manual.pdf","eprel_registration_number":null,"warranty_years":2,"segment":null,"form_factor":"in_ear","bud_shape":"stem","single_bud_use":"either","rgb_lighting":null,"drivers":[{"type":"dynamic","role":null,"size_mm":11,"count":1}],"driver_type":"dynamic","driver_size_mm":11,"drivers_per_side":1,"driver_diaphragm_material":null,"frequency_response_hz":{"min_hz":20,"max_hz":20000},"impedance_ohm":14,"sensitivity_db":null,"sensitivity_reference":null,"max_sample_rate_khz":null,"max_bit_depth_bits":null,"adaptive_eq":null,"sound_personalization":true,"onboard_eq":null,"eq_bands":null,"eq_presets":["Default","Acoustic","Bass Booster","Bass Reducer","Classical"],"volume_limit_db":null,"virtual_surround":["Movie mode"],"head_tracking":null,"anc":true,"anc_type":null,"anc_mic_count":null,"anc_adaptive":true,"anc_levels":5,"anc_claimed_attenuation_db":45,"transparency_mode":true,"transparency_adjustable":true,"adaptive_audio_mode":null,"conversation_detection":null,"wind_noise_reduction":true,"measured_frequency_response_notes":"Boosted bass sound signature. The response stays close to its bass-heavy tuning, with treble variations that can veil detail or brighten sibilants. SoundGuys tested a purchased A3955 on firmware 1.67. With its Default profile, its B&K 5128 measurement shows a bass peak roughly 12 dB above the SoundGuys preference target around 60 Hz and a broad treble peak about 5 dB above target around 3-5 kHz. These are local peaks, not regional bass/treble averages. The two labs use different targets.","measured_bass_amount_db":9,"measured_treble_amount_db":5,"measured_target_deviation_db":null,"measured_response_consistency_db":null,"measured_thd_pct":null,"measured_leakage_db_spl":null,"measured_noise_isolation":null,"measured_attenuation_overall_db":null,"measured_attenuation_passive_db":null,"measured_microphone_notes":"Voice sounds distorted and thin on calls. In loud conditions the mics separate noise decently but can cut out parts of speech. SoundGuys standardized artificial-mouth recordings cover ideal, office, street, wind and reverberant conditions on firmware 1.67. Its original review reports overly aggressive suppression can cut small speech segments. Host/codec are unstated. No numeric rejection value inferred from listener votes.","measured_microphone_lfe_hz":null,"measured_microphone_hfe_hz":null,"measured_microphone_noise_handling_db":null,"measured_latency":null,"measured_latency_bluetooth_ms":null,"measured_latency_2_4ghz_ms":null,"measured_latency_game_mode_ms":null,"measured_battery_life":[{"anc":null,"codec":null,"hours":9.3}],"measured_battery_life_h":9.3,"measured_battery_life_with_case_h":null,"measured_charge_time_min":null,"measured_weight_g":null,"microphone_count":6,"microphone_count_total":6,"voice_pickup_sensor":null,"microphone_noise_reduction":"ai","voice_call_bandwidth":null,"mute_button":null,"sidetone":null,"chipset":null,"connection_types":["bluetooth"],"bluetooth_version":"5.3","bluetooth_codecs":["SBC","AAC"],"bluetooth_profiles":null,"bluetooth_le_audio":null,"auracast":null,"multipoint":true,"multipoint_device_count":2,"multipoint_ldac":null,"paired_device_memory":null,"automatic_device_switching":null,"fast_pair":["google_fast_pair"],"audio_sharing":null,"wireless_range_m":10,"wireless_receiver":null,"receiver_connector":null,"simultaneous_2_4ghz_bluetooth":null,"low_latency_mode":true,"latency_claimed":null,"latency_claimed_min_ms":null,"compatible_platforms":["windows","macos","android","ios"],"platform_connections":[{"platform":"windows","connection":"bluetooth","microphone_works":true},{"platform":"macos","connection":"bluetooth","microphone_works":null},{"platform":"android","connection":"bluetooth","microphone_works":null},{"platform":"ios","connection":"bluetooth","microphone_works":null}],"feature_requirements":[{"feature":"Google Fast Pair","requirement":"Compatible Android device."},{"feature":"HearID Sound and custom sound settings","requirement":"soundcore app on iOS or Android. Firmware must be updated as instructed by the maker."},{"feature":"Game mode and Movie mode","requirement":"soundcore app."},{"feature":"Custom touch controls","requirement":"soundcore app. Single tap cannot be assigned Voice Assistant."},{"feature":"Find Earbuds audible locator","requirement":"Earbuds within the Bluetooth connection range. This is a local sound locator, not a tracking network."},{"feature":"Microphone in Windows conferencing apps","requirement":"Select soundcore P40i Hands-Free as the app microphone and speaker."}],"official_license":null,"battery_capacity_mah":60,"battery_user_replaceable":null,"battery_life_claimed":[{"mode":"anc_off","codec":null,"spatial_audio":null,"with_case":false,"hours":12},{"mode":"anc_off","codec":null,"spatial_audio":null,"with_case":true,"hours":60},{"mode":"anc_on","codec":null,"spatial_audio":null,"with_case":false,"hours":10},{"mode":"anc_on","codec":null,"spatial_audio":null,"with_case":true,"hours":50},{"mode":"transparency","codec":null,"spatial_audio":null,"with_case":false,"hours":10},{"mode":"transparency","codec":null,"spatial_audio":null,"with_case":true,"hours":50},{"mode":"call","codec":null,"spatial_audio":null,"with_case":false,"hours":7}],"battery_life_max_h":12,"battery_life_anc_on_h":10,"battery_life_anc_off_h":12,"battery_life_with_case_h":60,"battery_life_with_case_anc_on_h":50,"talk_time_h":7,"charge_time_0_100_min":60,"charging_notes":null,"quick_charge_min":10,"quick_charge_playback_h":5,"case_battery_capacity_mah":800,"case_battery_user_replaceable":null,"charging_port":"usb_c","case_charge_time_min":180,"wireless_charging":true,"wireless_charging_standards":["qi"],"wireless_charging_max_w":null,"case_speaker":null,"case_screen":null,"case_audio_transmitter":null,"control_types":["touch"],"volume_control":"touch","gesture_controls":["Single tap","Double tap","Press and hold for 2 seconds"],"customizable_controls":true,"voice_assistant":["Siri"],"wear_detection":null,"sensors":["Touch sensors"],"heart_rate_sensor":null,"skin_temperature":null,"hearing_aid_feature":null,"medical_clearances":null,"hearing_test":true,"loud_sound_reduction":null,"health_features":null,"ear_tip_sizes":["XS","S","M","L","XL"],"ear_tip_materials":["silicone"],"stabilizers":["none"],"fit_test":true,"ip_rating":["IPX5"],"case_ip_rating":null,"water_resistance_depth_m":null,"companion_app":"soundcore","companion_app_platforms":["ios","android"],"firmware_updatable":true,"find_my_networks":null,"precision_finding":null,"live_translation":null,"weight_g":5,"dimensions_mm":null,"case_weight_g":null,"case_dimensions_mm":null,"hi_res_audio":null,"communication_certifications":null,"fcc_ids":["2AOKB-A3955"],"other_certifications":["EU Radio Equipment Directive 2014/53/EU conformity","EU RoHS Directive 2011/65/EU and amendment 2015/863 conformity","ISED IC 23451-A3955","Japanese radio technical conformity mark"],"in_the_box":["Earbuds","Charging case","Five sizes of ear tips","USB-A to USB-C cable","Safety manual","Quick start guide"],"cables_included":[{"type":"USB-A to USB-C","length_m":null,"count":1}]},"variants":[{"model_number":"A3955Z11","gtin":"194644186340","markets":["US"],"colors":["Black"]},{"model_number":"A3955Z21","gtin":"194644190989","markets":["US"],"colors":["Oat White"]},{"model_number":"A3955Z31","gtin":"194644190965","markets":["US"],"colors":["Navy Blue"]},{"model_number":"A3955ZQ1","gtin":"194644190958","markets":["US"],"colors":["Purple"]},{"model_number":"A3955N11","markets":["JP"],"colors":["Black"]},{"model_number":"A3955N21","markets":["JP"],"colors":["Off White"]},{"model_number":"A3955N31","markets":["JP"],"colors":["Navy"]},{"model_number":"A3955NQ1","markets":["JP"],"colors":["Purple"]}],"sources":[{"url":"https://us.soundcore.com/products/p40i-a3955011","kind":"manufacturer_page","accessed":"2026-09-30","fields":["model_numbers","gtins","markets","colors","manufacturer_url","bud_shape","drivers","microphone_count","microphone_noise_reduction","variants"],"notes":{"model_numbers":"US SKUs A3955Z11, A3955Z21, A3955Z31, A3955ZQ1 from the store's product data (products/p40i-a3955011.js)","gtins":"Variant barcodes in the store's product data: Black 194644186340, Oat White 194644190989, Navy Blue 194644190965, Purple 194644190958","bud_shape":"Product photos show stem buds","drivers":"Published as 11 mm composite drivers with BassUp","microphone_noise_reduction":"Published as 6 mics and an AI algorithm","manufacturer_url":"Opened maker product page names exact P40i model.","markets":"Exact-model US and Japanese maker store pages. Regional color/SKU rows verified separately."}},{"url":"https://www.ankerjapan.com/products/a3955","kind":"manufacturer_page","accessed":"2026-09-30","fields":["release_date","model_numbers","markets","drivers","connection_types","bluetooth_codecs","fast_pair","wireless_charging","ip_rating","weight_g","low_latency_mode","microphone_count","variants","in_the_box","cables_included","colors"],"notes":{"release_date":"Japanese product specifications list April 2024 as the Japan release month. Earlier international availability remains unresolved.","model_numbers":"Japan model list: N21 Off White, N11 Black, N31 Navy, NQ1 Purple.","drivers":"Specifications: 11 mm dynamic driver.","weight_g":"Product specifications: approximately 5 g per earbud. 58 g with case includes earbuds and is not case-only.","ip_rating":"IPX5, buds only","microphone_count":"Call feature: six beamforming microphones across the pair.","low_latency_mode":"Product feature: Game mode.","connection_types":"Communication specifications: Bluetooth 5.3. No wired or dongle audio connection listed.","in_the_box":"Package contents, translated from Japanese product page.","cables_included":"Package contents: USB-C and USB-A cable, one charging cable.","colors":"Japanese product model list: Off White, Black, Navy and Purple. US labels Oat White and Navy Blue retained separately.","variants":"Product model list explicitly maps N21 Off White, N11 Black, N31 Navy, NQ1 Purple. US Zxx configurations from US store.","markets":"Anker Japan exact A3955/P40i product available in Japanese official store. Regional SKUs documented separately.","bluetooth_codecs":"Maker comparison table: P40i column lists SBC and AAC. LDAC belongs to other products.","fast_pair":"Exact P40i feature paragraph explicitly supports Google Fast Pair for Android."}},{"url":"https://lp.ankerjapan.com/hubfs/aoos/manual/A3955Manual.pdf","kind":"manual","accessed":"2026-09-30","fields":["manual_url","battery_capacity_mah","case_battery_capacity_mah","battery_life_claimed","charge_time_0_100_min","case_charge_time_min","quick_charge_min","quick_charge_playback_h","frequency_response_hz","impedance_ohm","bluetooth_version","wireless_range_m","ear_tip_sizes","multipoint_device_count","control_types","anc_adaptive","transparency_mode","firmware_updatable","gesture_controls","customizable_controls","drivers","driver_type","anc","multipoint","charging_port"],"notes":{"battery_life_claimed":"Specifications p 10: 12/60 h ANC off, 10/50 h ANC on, earbuds-only versus case-inclusive. Transparency 10/50 h and call 7 h from Nordic English FAQ.","charge_time_0_100_min":"Specifications page 10: up to one hour for earbuds. Nordic FAQ says around 50 minutes, manual preferred.","case_charge_time_min":"Specifications page 10: up to three hours for case by cable.","impedance_ohm":"Specifications page 10: impedance 14 ohms.","multipoint_device_count":"Multipoint chapter: connects to two devices simultaneously.","gesture_controls":"Controls table: x 1 tap, x 2 double tap, 2 second press and hold","wireless_range_m":"Specifications page 10: Bluetooth operating range 10 m.","manual_url":"Manual pairing instructions expressly name soundcore P40i. (PDF page 2)","driver_type":"Specifications table (PDF page 7): 11 mm dynamic driver.","frequency_response_hz":"Specifications table (PDF page 7): 20 Hz to 20 kHz.","bluetooth_version":"Specifications table (PDF page 7): Bluetooth 5.3.","battery_capacity_mah":"Specifications table (PDF page 7): 60 mAh x 2 earbuds.","case_battery_capacity_mah":"Specifications table (PDF page 7): 800 mAh case.","anc":"Modes (PDF page 5): noise cancellation with automatic strength depending on ambient noise, plus manual and scene modes.","anc_adaptive":"Modes (PDF page 5): noise cancellation with automatic strength depending on ambient noise.","transparency_mode":"Modes (PDF page 5): external-sound transparency.","multipoint":"Multipoint instructions connect two devices simultaneously. (PDF page 4)","quick_charge_min":"Manual page 3 charging diagram: 10-minute charge for 5 hours of playback. ANC state unspecified.","quick_charge_playback_h":"Manual page 3 charging diagram: 10-minute charge for 5 hours of playback. ANC state unspecified.","charging_port":"Manual page 1 overview: USB-C charging port.","control_types":"Manual page 1 overview: touch control area.","customizable_controls":"Controls instructions expressly customisable via Soundcore app. (PDF page 4)","ear_tip_sizes":"Manual page 2 fit diagram: XS, S, M, L and XL tips.","firmware_updatable":"Firmware update user instructions app Settings/download. (PDF page 6)"}},{"url":"https://lp.ankerjapan.com/hubfs/aoos/manual/A3955Guide.pdf","kind":"manual","accessed":"2026-09-30","fields":["sound_personalization","fit_test","low_latency_mode","companion_app","companion_app_platforms","virtual_surround","transparency_adjustable","hearing_test","eq_presets"],"notes":{"sound_personalization":"App guide page 5: HearID Sound builds a hearing-sensitivity profile using a tone test.","fit_test":"App guide page 3: earbud fit test.","companion_app":"Soundcore app, from the App Store or Google Play","virtual_surround":"App settings guide pp 3/6: Movie mode gives a 3 D sound effect.","transparency_adjustable":"Mode settings p 4: transparency offers All Ambient and Voice Focus modes.","hearing_test":"Sound Effects p 5: HearID hearing test plays several frequency tones to create a hearing-sensitivity profile. Consumer personalization, not a clinical test.","eq_presets":"App settings guide page 5 screenshot: five named preset buttons shown, translated from Japanese. The maker says 22 presets exist, but remaining names were not established.","companion_app_platforms":"App installation expressly App Store iOS or Google Play Android. (PDF page 2)"}},{"url":"https://www.ankernordics.com/products/p40i-a3955011","kind":"manufacturer_page","accessed":"2026-09-30","fields":["status","gtins","battery_life_claimed","wind_noise_reduction","single_bud_use","volume_control","wireless_charging","case_charge_time_min","charge_time_0_100_min","ip_rating"],"notes":{"status":"Anker Nordics store (Anker Innovations) lists all four colours as available for sale","battery_life_claimed":"FAQ: Transparency 10 h buds and 50 h with the case. Calls 7 h with ANC off and 6.5 h with ANC on","case_charge_time_min":"FAQ: around 3 hours via a wall charger, 4 hours via a wireless charger","charge_time_0_100_min":"FAQ says around 50 mins, lab data at 25 +/- 3 degrees C","volume_control":"FAQ: volume on the buds is set up in the app under Controls, Customize Volume Adjustment","single_bud_use":"FAQ: either earbud can be used on its own","wind_noise_reduction":"Maker P40i FAQ explicitly gives the Wind Noise Reduction app setting."}},{"url":"https://cdn.shopify.com/s/files/1/0519/2355/0368/files/51005004317_V2_soundcore_Headphone_A3955_EU_Offline_QSG_Safety_90x90mm_20240117.pdf","kind":"manual","accessed":"2026-09-30","fields":["fcc_ids","warranty_years","wireless_charging"],"notes":{"warranty_years":"EU safety guide warranty page: 24-month limited warranty. Japan has 18 months plus 6 months after Anker membership registration. Market-specific warranty.","wireless_charging":"Lists a WPT operating frequency of 110 KHz-205 KHz","fcc_ids":"FCC ID: 2AOKB-A3955, IC: 23451-A3955"}},{"url":"https://www.rtings.com/headphones/reviews/anker/soundcore-p40i-true-wireless","kind":"review_site","accessed":"2026-09-30","fields":["form_factor","stabilizers","measured_frequency_response_notes","measured_bass_amount_db","measured_treble_amount_db","measured_microphone_notes","measured_battery_life"],"notes":{"measured_bass_amount_db":"Public summary: Very Emphasized (9 dB). Test bench 2.3, Black unit. Full results are behind a paywall and were not read","measured_treble_amount_db":"Public summary: Very Emphasized (5 dB)","measured_battery_life":"Public P41i comparison explicitly states P40i 9.3-hour continuous battery life. Travel verdict rounds it to nine hours. Test bench 2.3, ANC and codec settings not publicly stated.","stabilizers":"They lack wings or stabilizers","form_factor":"Type: In-ear","measured_frequency_response_notes":"Our Verdict: Audio Reproduction Accuracy","measured_microphone_notes":"Our Verdict: Microphone"}},{"url":"https://www.notebookcheck.com/Anker-Neue-Soundcore-P40i-Ohrhoerer-koennen-bereits-vor-dem-offiziellen-Launch-bei-Amazon-geordert-werden.801547.0.html","kind":"press","accessed":"2026-10-07","fields":["release_date"],"notes":{"release_date":"Global first availability refined to February 2024. Notebookcheck February 8 reports exact A3955 already orderable at €69.99 with delivery in a few days. SoundGuys metadata says February 25 and original price $69.99. Maker April 9 announcement expressly concerns Japan. Existing Japan April release evidence remains true for that market, but is not the earliest global month. Exact global day remains unresolved."}},{"url":"https://corp.ankerjapan.com/posts/466","kind":"press_release","accessed":"2026-10-07","fields":["release_date"],"notes":{"release_date":"Maker Japan launch explicitly starts April 9, 2024 in Anker Japan, Anker Store, Amazon.co.jp and local retailers. This is regional availability and does not override earlier European sale in February."}},{"url":"https://lp.ankerjapan.com/hubfs/aoos/manual/A3955Guide.pdf","kind":"manual","accessed":"2026-10-07","fields":["anc_levels"],"notes":{"anc_levels":"Maker exact P40i app guide page 4 manually selectable ANC strength boxes explicitly numbered 1, 2, 3, 4, 5. Automatic adaptation and three scene choices are different controls. Off and transparency not counted. Guide UI firmware example 01.58 appears on page 8, without an asserted current firmware maximum."}},{"url":"https://www.fashaoyou.net/archives/35647","kind":"press","accessed":"2026-10-07","fields":["microphone_count_total","anc_claimed_attenuation_db"],"notes":{"microphone_count_total":"Original February 28 MWC launch report explicitly says six physical microphones, three in each earbud. IT Home separately says each bud internally contains three. Maker six beamforming call-mic claim corroborates six, but no ANC role count inferred. This field counts all physical mics across the pair, excluding case.","anc_claimed_attenuation_db":"Original February 28, 2024 MWC report on exact P40i expressly says adaptive ANC, up to 45 dB maximum noise reduction. Manufacturer claim reported by press, not reviewer measured average. Frequency and laboratory method are unpublished. Inaccessible retailer artwork and its unverifiable comparative footnote are not used."}},{"url":"https://www.ankernordics.com/products/p40i-a3955011","kind":"manufacturer_page","accessed":"2026-10-07","fields":["compatible_platforms","platform_connections","voice_assistant"],"notes":{"compatible_platforms":"Exact P40i maker FAQ specifically covers Windows input/output, Mac Bluetooth audio, Android-phone Bluetooth volume and iPhone audio. Documented playback paths, not generic inference from Bluetooth version. No console/Linux platforms added.","platform_connections":"Exact FAQ documents Bluetooth pairing/playback on Windows, Mac, Android and iPhone. Windows microphone explicitly assigned soundcore P40i Hands-Free in conferencing software and system input, so microphone_works true only for that proved row. Unknown per-platform mic flags omitted.","voice_assistant":"Exact FAQ instructs remapping touch action to phone Voice Assistant and separately troubleshoots Siri volume. Siri is directly named. Generic Android assistant support does not identify Google Assistant/Gemini, so no brand guessed. Single tap cannot activate assistant."}},{"url":"https://lp.ankerjapan.com/hubfs/aoos/manual/A3955Guide.pdf","kind":"manual","accessed":"2026-10-07","fields":["feature_requirements"],"notes":{"feature_requirements":"Exact maker app guide pages 2, 5, 6, 7, 8 establishes iOS/Android app, HearID, immersive modes, custom controls and audible finder within Bluetooth range. Exact Japan maker page binds Fast Pair to Android. Nordic FAQ supplies Windows Hands-Free and assistant assignment restriction. No unstated minimum OS/version/codec inferred."}},{"url":"https://www.ankernordics.com/products/p40i-a3955011","kind":"manufacturer_page","accessed":"2026-10-07","fields":["feature_requirements"],"notes":{"feature_requirements":"Exact Windows FAQ explicitly assigns Hands-Free for conferencing input/output. Exact assistant FAQ says single tap cannot invoke assistant. These are requirements, not Microsoft Teams certification."}},{"url":"https://www.ankerjapan.com/pages/soundcore-p40i","kind":"manufacturer_page","accessed":"2026-10-07","fields":["feature_requirements"],"notes":{"feature_requirements":"Exact Google Fast Pair paragraph specifically identifies Android devices. Page footnote tells users to ensure firmware is updated when using the soundcore app, while basic earbuds playback also works without the app. No unstated platform minimum or firmware version is inferred."}},{"url":"https://www.soundguys.com/anker-soundcore-p40i-review-143328/","kind":"review_site","accessed":"2026-10-07","fields":["wireless_charging_standards","ear_tip_materials"],"notes":{"wireless_charging_standards":"Approved original A3955 reviewer explicitly says case supports Qi wireless charging. Maker manual specifies placing case in charger centre and safety document WPT band. This is compatible Qi, not an invented WPC certificate/ID, Qi2 or MagSafe support.","ear_tip_materials":"Original P40i review explicitly names five pairs of silicone tips with integrated grilles. No foam or hybrid tips imported from optional aftermarket accessories."}},{"url":"https://www.ankerjapan.com/pages/soundcore-p40i","kind":"manufacturer_page","accessed":"2026-10-07","fields":["sensors"],"notes":{"sensors":"Exact maker paragraph explicitly names touch sensors and a raised dot placed on them for intuitive operation. Sensor technology is not called capacitive/optical because not stated. This does not establish wearing detection, motion or health sensors."}},{"url":"https://salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000027115/en_US/000027115.pdf","kind":"manufacturer_pdf","accessed":"2026-10-07","fields":["other_certifications"],"notes":{"other_certifications":"Producer EU/UK titled declaration V3.0 explicitly binds soundcore P40i Model A3955 to RED 2014/53/EU and RoHS 2011/65/EU plus 2015/863. Signed July 15, 2025. Exact safety guide supplies IC 23451-A3955. Japanese exact maker product page explicitly says technical conformity mark approved product, 2.40-2.48 GHz. No UK statutory names inferred from the combined document title and no standard-number typo silently corrected."}},{"url":"https://cdn.shopify.com/s/files/1/0519/2355/0368/files/51005004317_V2_soundcore_Headphone_A3955_EU_Offline_QSG_Safety_90x90mm_20240117.pdf","kind":"manual","accessed":"2026-10-07","fields":["other_certifications"],"notes":{"other_certifications":"Matching safety guide explicitly prints IC 23451-A3955. Existing FCC ID 2AOKB-A3955 remains. Japan radio marking number is visible in text but no certifier name guessed."}},{"url":"https://www.ankerjapan.com/products/a3955","kind":"manufacturer_page","accessed":"2026-10-07","fields":["other_certifications"],"notes":{"other_certifications":"Exact product specification package says radio technical conformity mark approved, operating band 2.40-2.48 GHz. No unrelated medical/communications approval inferred."}},{"url":"https://www.soundguys.com/anker-soundcore-p40i-review-143328/","kind":"review_site","accessed":"2026-10-07","fields":["measured_frequency_response_notes","measured_microphone_notes"],"notes":{"measured_frequency_response_notes":"Added SoundGuys paragraph only. Actual lab FR against its stated preference curve, Default profile, purchased exact A3955, firmware 1.67. General documented rig B&K 5128, B&K 1704C-102 and SoundCheck. Exact host/codec/test level unstated. Bass 12 dB is a local peak, not the existing RTINGS regional amount 9 dB. Existing RTINGS text/figures retained.","measured_microphone_notes":"Added SoundGuys controlled-recording paragraph only. Its general method uses prerecorded speech from calibrated artificial mouth, with/without simulated noise and reverberation. Product review publishes those samples and describes suppression dropouts. Firmware 1.67. Host/codec unstated. Existing RTINGS description retained."}},{"url":"https://www.soundguys.com/how-we-test/","kind":"review_site","accessed":"2026-10-07","fields":["measured_frequency_response_notes","measured_microphone_notes"],"notes":{"measured_frequency_response_notes":"Reviewer official method: B&K 5128 fixture, powered by B&K 1704C-102, SoundCheck-controlled measurement. Target is SoundGuys preference curve.","measured_microphone_notes":"Reviewer official method: calibrated artificial mouth plays prerecorded phrases in chamber, optionally with simulated background/reverberation. Conditions are measurement procedures, not a subjective untested listening note."}},{"url":"https://prtimes.jp/main/html/rd/p/000000662.000016775.html","kind":"press_release","accessed":"2026-10-23","fields":["successor"],"notes":{"successor":"Anker Japan's press release calls the Soundcore P42i the next-generation model of the Soundcore P40i."}},{"url":"https://av.watch.impress.co.jp/docs/news/2121578.html","kind":"press","accessed":"2026-10-23","fields":["successor"],"notes":{"successor":"AV Watch calls the Soundcore P42i the next-generation model of the Soundcore P40i."}}],"fields_filled":84,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}