{"data":{"slug":"bose-quietcomfort-ultra-earbuds","type":"earbuds","brand":"Bose","name":"QuietComfort Ultra Earbuds","aliases":["QC Ultra Earbuds","QCUE","QuietComfort Ultra Earbuds (1st Gen)","QC Ultra Earbuds 1st Gen"],"release_date":"2023-10","url":"https://arkivo.dev/earbuds/bose-quietcomfort-ultra-earbuds","specs":{"series":"QuietComfort","model_numbers":["441408","408L","408R","882826-0010"],"gtins":["0017817847681"],"announce_date":"2023-09-14","status":"available","predecessor":"bose-quietcomfort-earbuds-ii","successor":"bose-quietcomfort-ultra-earbuds-2nd-gen","launch_price_usd":299,"launch_price_eur":null,"markets":["US","GB","DE","FR"],"colors":["Black","White Smoke","Lunar Blue","Moonstone Blue"],"manufacturer_url":"https://www.bose.co.uk/p/earbuds/bose-quietcomfort-ultra-earbuds/QCUE-HEADPHONEIN.html","spec_sheet_url":"https://support.bose.com/article/quietcomfort-ultra-earbuds-specifications?language=en_US","manual_url":"https://assets.bosecreative.com/m/157ea573fd945c2e/original/885502_OG_QCUE-HEADPHONEIN_en.pdf","eprel_registration_number":null,"warranty_years":2,"segment":"music","form_factor":"in_ear","bud_shape":"stem","single_bud_use":"either","rgb_lighting":null,"drivers":null,"driver_type":"dynamic","driver_size_mm":null,"drivers_per_side":null,"driver_diaphragm_material":null,"frequency_response_hz":null,"impedance_ohm":null,"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":3,"eq_presets":["Bass Boost","Bass Reducer","Treble Boost","Treble Reducer"],"volume_limit_db":null,"virtual_surround":["Bose Immersive Audio"],"head_tracking":true,"anc":true,"anc_type":"hybrid","anc_mic_count":null,"anc_adaptive":true,"anc_levels":null,"anc_claimed_attenuation_db":null,"transparency_mode":true,"transparency_adjustable":true,"adaptive_audio_mode":true,"conversation_detection":null,"wind_noise_reduction":true,"measured_frequency_response_notes":"Warm sound signature","measured_bass_amount_db":4,"measured_treble_amount_db":0,"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":"In controlled phone-call tests, transmitted speech retained substantial simulated cabin noise. Simulated restaurant noise was only partly suppressed.","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":6.18}],"measured_battery_life_h":6.18,"measured_battery_life_with_case_h":null,"measured_charge_time_min":null,"measured_weight_g":null,"microphone_count":8,"microphone_count_total":8,"voice_pickup_sensor":null,"microphone_noise_reduction":"dsp","voice_call_bandwidth":null,"mute_button":null,"sidetone":true,"chipset":"Qualcomm S5","connection_types":["bluetooth"],"bluetooth_version":"5.3","bluetooth_codecs":["SBC","AAC","aptX Adaptive"],"bluetooth_profiles":["A2DP","HFP","AVRCP"],"bluetooth_le_audio":null,"auracast":null,"multipoint":true,"multipoint_device_count":2,"multipoint_ldac":null,"paired_device_memory":6,"automatic_device_switching":null,"fast_pair":["google_fast_pair"],"audio_sharing":null,"wireless_range_m":9,"wireless_receiver":null,"receiver_connector":null,"simultaneous_2_4ghz_bluetooth":null,"low_latency_mode":null,"latency_claimed":null,"latency_claimed_min_ms":null,"compatible_platforms":["android","ios"],"platform_connections":null,"feature_requirements":[{"feature":"Fast Pair","requirement":"Android device running Android 6.0 or higher"},{"feature":"Snapdragon Sound","requirement":"Snapdragon Sound-certified device, such as a compatible Android mobile device"},{"feature":"SimpleSync","requirement":"Bose Smart Speaker or Bose Smart Soundbar"},{"feature":"Multipoint","requirement":"Earbud software update from July 2024 through the Bose app"}],"official_license":null,"battery_capacity_mah":null,"battery_user_replaceable":null,"battery_life_claimed":[{"mode":"anc_on","codec":null,"spatial_audio":false,"with_case":false,"hours":6},{"mode":"anc_on","codec":null,"spatial_audio":true,"with_case":false,"hours":4}],"battery_life_max_h":6,"battery_life_anc_on_h":6,"battery_life_anc_off_h":null,"battery_life_with_case_h":null,"battery_life_with_case_anc_on_h":null,"talk_time_h":null,"charge_time_0_100_min":120,"charging_notes":null,"quick_charge_min":20,"quick_charge_playback_h":2,"case_battery_capacity_mah":null,"case_battery_user_replaceable":null,"charging_port":"usb_c","case_charge_time_min":180,"wireless_charging":false,"wireless_charging_standards":null,"wireless_charging_max_w":null,"case_speaker":null,"case_screen":null,"case_audio_transmitter":null,"control_types":["touch","swipe"],"volume_control":"swipe","gesture_controls":["Tap","Double-tap","Triple-tap","Touch and hold","Swipe up","Swipe down"],"customizable_controls":true,"voice_assistant":null,"wear_detection":true,"sensors":["IMU"],"heart_rate_sensor":null,"skin_temperature":null,"hearing_aid_feature":null,"medical_clearances":null,"hearing_test":null,"loud_sound_reduction":true,"health_features":null,"ear_tip_sizes":["S","M","L"],"ear_tip_materials":["silicone"],"stabilizers":["stability_bands"],"fit_test":true,"ip_rating":["IPX4"],"case_ip_rating":null,"water_resistance_depth_m":null,"companion_app":"Bose app","companion_app_platforms":["android","ios"],"firmware_updatable":true,"find_my_networks":null,"precision_finding":null,"live_translation":null,"weight_g":null,"dimensions_mm":{"width_mm":20.1,"height_mm":31.2,"depth_mm":24.4},"case_weight_g":null,"case_dimensions_mm":{"width_mm":59.4,"height_mm":66.3,"depth_mm":26.7},"hi_res_audio":null,"communication_certifications":null,"fcc_ids":["A94408L","A94408R"],"other_certifications":["Snapdragon Sound"],"in_the_box":["2 Bose QuietComfort Ultra Earbuds","3 pairs of eartips (S, M, L)","3 pairs of stability bands (1, 2, 3)","Charging case","30 cm USB-C® (A to C) cable","Safety sheet"],"cables_included":[{"type":"USB-C (A to C)","length_m":0.3,"count":1}]},"variants":[],"sources":[{"url":"https://www.bose.co.uk/p/earbuds/bose-quietcomfort-ultra-earbuds/QCUE-HEADPHONEIN.html","kind":"manufacturer_page","accessed":"2026-10-07","fields":["manufacturer_url","series","status","markets","colors","form_factor","single_bud_use","anc","anc_type","anc_adaptive","transparency_mode","eq_bands","virtual_surround","wind_noise_reduction","sidetone","connection_types","bluetooth_profiles","multipoint","multipoint_device_count","feature_requirements","fast_pair","compatible_platforms","charge_time_0_100_min","charging_port","control_types","volume_control","gesture_controls","customizable_controls","ear_tip_sizes","ear_tip_materials","stabilizers","ip_rating","companion_app","companion_app_platforms","other_certifications","in_the_box","cables_included","warranty_years","segment","sound_personalization","transparency_adjustable"],"notes":{"manufacturer_url":"The US product URL now returns a 404. The UK page is the live maker page for the new product.","status":"Product heading, colour swatches, £299.95 price and Add to Basket. The German and French pages also list it at 299,95 €. New stock on bose.com US is gone and only refurbished units remain there.","markets":"GB from this page. DE and FR from bose.de and bose.fr pages of the same product. US from the bose.com refurbished page and the launch coverage.","colors":"Colour swatches on the UK page: Lunar Blue (SKU QCUE-HEADPHONEIN-LBLU-WW) and White Smoke selectable, Moonstone Blue shown as out of stock","form_factor":"Technical Specifications: Headphone Fit In-ear","single_bud_use":"FAQ: the Single-bud Use feature lets you take calls and listen to music with one bud and switches automatically between the earbuds","anc_type":"FAQ: active noise cancellation uses microphones both inside and outside the earbuds","anc_adaptive":"CustomTune analyses your ears and automatically adapts the sound and active noise cancellation to their shape","eq_bands":"Bose app section: adjust the levels of bass, mid-range and treble. The battery footnote also names a 3-band EQ.","virtual_surround":"Bose Immersive Audio works with any source and content","wind_noise_reduction":"Call processing, not an ANC mode: FAQ says the adaptive microphone system isolates your voice from background noise and wind","sidetone":"FAQ: self-voice, adjustable in the Bose app, lets you hear yourself during calls","bluetooth_profiles":"Technical Specifications: Wireless Connectivity A2DP Bluetooth Audio Streaming, HFP Bluetooth, Snapdragon Sound","multipoint":"FAQ: connects to two source devices at the same time. Added by a software update in July 2024. Not available at launch.","multipoint_device_count":"FAQ: two source devices at the same time","feature_requirements":"Multipoint row: FAQ says multipoint is a July 2024 update received through the Bose app. Fast Pair row also needs location services and Bluetooth on.","fast_pair":"FAQ: Google Fast Pair for Android OS 6.0 or newer","compatible_platforms":"Bose app available on Google Play and the Apple App Store","charge_time_0_100_min":"Technical Specifications: Battery Charge Time 2 hours","charging_port":"Technical Specifications: Charging Interface(s) USB-C PORT","control_types":"FAQ controls: swipe up or down for volume, tap, double tap, triple tap, press and hold for the shortcut","gesture_controls":"FAQ controls list. Names as in the owner's guide.","customizable_controls":"The shortcut on one or both earbuds can be customised in the Bose app","ear_tip_materials":"Soft silicone umbrella-shaped eartips","stabilizers":"Bose Fit Kit stability bands in sizes 1, 2, 3","ip_rating":"FAQ: passed IPX4 testing. The outside of the case should not be exposed to water, so no case rating is stored.","other_certifications":"Wireless Connectivity lists Snapdragon Sound. The FAQ names Snapdragon Sound certification.","in_the_box":"What's in the box on the UK page. The US refurbished page lists the same cable as 12 inch.","cables_included":"30 cm USB-C (A to C) cable","warranty_years":"Exact current original-earbud UK maker page Why buy direct from Bose explicitly promises 2-year warranty. Applies to new product purchased directly from Bose UK. Does not generalize to US refurbished units, statutory rights or separately sold BoseCare extension.","segment":"Maker explicitly positions these as music-listening in-ear earbuds with immersive audio, musical listening modes and customizable sound. Gaming codec capability does not make them a dedicated gaming edition.","sound_personalization":"CustomTune technology paragraph explicitly analyzes ear shape and calibrates audio to each ear canal. This is acoustic ear-scan personalization, not a hearing assessment or medical hearing-aid claim.","transparency_adjustable":"Modes for any musical moment says full Aware transparency can be blended with Quiet through Custom Mode in Bose app. FAQ also permits intermediate sound levels between Quiet and Aware. No ANC step count inferred."}},{"url":"https://www.bose.de/p/earbuds/bose-quietcomfort-ultra-earbuds/QCUE-HEADPHONEIN.html","kind":"manufacturer_page","accessed":"2026-10-06","fields":["markets","dimensions_mm","case_dimensions_mm"],"notes":{"dimensions_mm":"Einzelner Earbud 3.12 cm H x 2.01 cm W x 2.44 cm D. The US and UK pages give 1.23 in H x 0.79 in W x 0.96 in D, which agrees.","case_dimensions_mm":"Etui 6.63 cm H x 5.94 cm W x 2.67 cm D. The US and UK pages give 2.61 in H x 2.34 in W x 1.05 in D, which agrees.","markets":"Listed at 299,95 €"}},{"url":"https://www.bose.fr/p/earbuds/bose-quietcomfort-ultra-earbuds/QCUE-HEADPHONEIN.html","kind":"manufacturer_page","accessed":"2026-10-06","fields":["markets"]},{"url":"https://www.bose.com/p/refurbished/bose-quietcomfort-ultra-earbuds/QCUE-HEADPHONEIN-FR.html","kind":"manufacturer_page","accessed":"2026-10-06","fields":["markets","colors","launch_price_usd","bluetooth_version","wireless_range_m"],"notes":{"launch_price_usd":"Bose refurbished page: Original Price is $299.00. TechRadar and What Hi-Fi also give $299 at launch.","colors":"Refurbished colour swatches: Black (SKU QCUE-HEADPHONEIN-BLK-FR-WW), Lunar Blue, Moonstone Blue, White Smoke","bluetooth_version":"Technical Specifications: Bluetooth Version 5.3","wireless_range_m":"Technical Specifications: Bluetooth Range 30'"}},{"url":"https://assets.bosecreative.com/m/157ea573fd945c2e/original/885502_OG_QCUE-HEADPHONEIN_en.pdf","kind":"manual","accessed":"2026-10-06","fields":["manual_url","model_numbers","fcc_ids","head_tracking","eq_bands","adaptive_audio_mode","loud_sound_reduction","sidetone","bluetooth_codecs","multipoint","multipoint_device_count","paired_device_memory","fast_pair","wireless_range_m","feature_requirements","charge_time_0_100_min","case_charge_time_min","quick_charge_min","quick_charge_playback_h","control_types","volume_control","gesture_controls","customizable_controls","wear_detection","ear_tip_sizes","fit_test","ip_rating","companion_app","firmware_updatable","other_certifications"],"notes":{"manual_url":"Owner's guide 885502 for QUIETCOMFORT ULTRA EARBUDS, support.Bose.com/QCUE. PDF revision dated January 2026.","model_numbers":"Regulatory page 6: Case Model 441408, Right Earbud Model 408R, Left Earbud Model 408L. The 2nd Gen owner's guide lists the same earbud models with case model 444965.","fcc_ids":"FCC ID: A94408L / A94408R, IC: 3232A-408L / 3232A-408R","head_tracking":"Page 31: Motion keeps the two virtual speakers following your head. Still keeps them in place when you move your head.","eq_bands":"Battery footnotes use a 3-band EQ set to zero","adaptive_audio_mode":"Page 33: Aware mode with ActiveSense automatically increases noise cancellation when sudden or loud noises occur while you keep hearing your surroundings","loud_sound_reduction":"Page 33: ActiveSense raises noise cancellation for sudden or loud noises in Aware mode, then returns","sidetone":"Page 30: self voice is activated during calls and is adjustable in the Bose app","bluetooth_codecs":"Page 47: aptX Adaptive with Snapdragon Sound-certified devices","multipoint":"Page 42: up to two mobile devices actively connected at a time (multi-point connection). Audio plays from one device at a time.","paired_device_memory":"Page 42: up to six devices in the earbud device list","fast_pair":"Page 46: Fast Pair for Android devices","wireless_range_m":"Page 43: devices must be within range (30 ft or 9 m)","feature_requirements":"Fast Pair needs Android 6.0 or higher (page 46). Snapdragon Sound needs a certified device (page 47). SimpleSync works with Bose Smart Speakers and Soundbars (page 48).","charge_time_0_100_min":"Page 39 charging time table: Earbuds up to 2 hours","case_charge_time_min":"Page 39 charging time table: Charging case up to 3 hours","quick_charge_min":"Page 39: a 20-minute charge in the closed case powers the earbuds up to 2 hours","quick_charge_playback_h":"Earbuds-only playback. Quiet Mode, Immersive Audio off, 75 dB SPL, 3-band EQ zero.","control_types":"Pages 24 to 27: tap and swipe the touch surface, touch and hold for the shortcut","volume_control":"Page 24: swipe up or down on an earbud","gesture_controls":"Pages 24 to 28","customizable_controls":"Page 28: change or disable the shortcut, or assign a different shortcut to each earbud, in the Bose app","wear_detection":"Page 29: in-ear detection with auto play/pause, auto answer call and auto transparency","ear_tip_sizes":"Page 18: small, medium and large eartips are included. Medium comes attached.","fit_test":"Page 16: Earbud Seal Test in the Bose app","ip_rating":"Page 14: the earbuds are rated IPX4","companion_app":"Page 13: Bose app. Launch coverage names the earlier Bose Music app.","firmware_updatable":"Page 52: the earbuds update through the Bose app. The case updates through btu.Bose.com.","other_certifications":"Page 47: the earbuds feature Snapdragon Sound technology"}},{"url":"https://www.bose.com/pressroom/bose-announces-new-quietcomfort-ultra-headphones-and-earbuds","kind":"press_release","accessed":"2026-10-06","fields":["announce_date","bluetooth_version","bluetooth_codecs","fast_pair","wireless_charging","wind_noise_reduction","head_tracking","sensors","microphone_noise_reduction"],"notes":{"announce_date":"Dated September 14, 2023","bluetooth_version":"Both QC Ultra products are Bluetooth 5.3 compatible","wireless_charging":"The case has no built-in wireless charging. An optional $49 silicone case cover, sold separately from October 20, 2023, adds it.","wind_noise_reduction":"Dynamic microphone mixing picks the microphone on each bud with the least wind noise and selects noise filters for calls","head_tracking":"Immersive Audio uses an onboard IMU. Still and Motion options.","sensors":"Onboard IMU for Bose Immersive Audio","microphone_noise_reduction":"Dynamic microphone mixing and adaptive filters select from a variety of noise filters in real time. No AI processing is named. The 2nd Gen added AI-powered noise suppression."}},{"url":"https://www.bose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-gen","kind":"press_release","accessed":"2026-10-06","fields":["successor"],"notes":{"successor":"The 2nd Gen release says: Like its predecessor, the QC Ultra Earbuds feature Bose's proprietary CustomTune sound calibration technology."}},{"url":"https://www.theverge.com/2023/9/14/23873671/bose-quietcomfort-ultra-headphones-earbuds-announced","kind":"press","accessed":"2026-10-06","fields":["launch_price_usd","colors"],"notes":{"launch_price_usd":"$299, available early October. Preorders opened September 14, 2023.","colors":"The QC Ultra Earbuds come in black or white finishes"}},{"url":"https://www.tomsguide.com/reviews/bose-quietcomfort-ultra-earbuds","kind":"review_site","accessed":"2026-10-06","fields":["colors"],"notes":{"colors":"Two color variations at launch: black and white smoke"}},{"url":"https://www.techradar.com/audio/headphones/earbuds-airpods/bose-quietcomfort-ultra-earbuds-review","kind":"review_site","accessed":"2026-10-06","fields":["release_date","bud_shape","microphone_count_total"],"notes":{"release_date":"Price & release date: the earbuds became available in mid-October, having launched on September 14, 2023","bud_shape":"Describes the outer-facing surface of the stems and earbuds with tails","microphone_count_total":"A four-mics-per-bud array, so eight across the pair. The 2nd Gen press release also states eight microphones."}},{"url":"https://www.whathifi.com/advice/bose-quietcomfort-ultra-earbuds-vs-airpods-pro-2","kind":"review_site","accessed":"2026-10-06","fields":["release_date"],"notes":{"release_date":"The Bose QuietComfort Ultra Earbuds launched in October. Tom's Guide (September 30, 2023) gave October 3 as the on-sale date with preorders open. The What Hi-Fi review says shortly after their release in September 2023, which matches the announcement, not a retail date."}},{"url":"https://www.soundguys.com/bose-quietcomfort-ultra-earbuds-review-101362/","kind":"review_site","accessed":"2026-10-07","fields":["bluetooth_codecs","measured_battery_life","eq_presets"],"notes":{"bluetooth_codecs":"Bluetooth 5.3 over SBC, AAC or aptX Adaptive","measured_battery_life":"6 h 11 min (6.18 h) in the SoundGuys standardized battery test. Firmware 7.7.4, Bose Music app 8.0.6. ANC state not stated on the page.","eq_presets":"Original 2023 review What do the different EQ modes sound like section explicitly names these four stock presets. Its Our Custom EQ attempt is reviewer-created and excluded."}},{"url":"https://www.rtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-truly-wireless","kind":"measurement","accessed":"2026-10-06","fields":["measured_frequency_response_notes","measured_bass_amount_db","measured_treble_amount_db"],"notes":{"measured_bass_amount_db":"Bass Amount: Emphasized (4 dB), test bench 2.3","measured_treble_amount_db":"Treble Amount: Balanced (0 dB), test bench 2.3","measured_frequency_response_notes":"Sound Signature: Warm"}},{"url":"https://www.conrad.be/nl/p/bose-quietcomfort-ultra-earbuds-in-ear-oordopjes-zwart-oplaadbox-waterafstotend-3334481.html","kind":"retailer","accessed":"2026-10-07","fields":["gtins","model_numbers"],"notes":{"gtins":"Exact current Conrad Belgium Black Gen. 1 table identifies EAN 0017817847681 and manufacturer SKU 882826-0010. Independently opened actual public table. Netherlands route was shell-only in verification. Black original stock case scope, not every color or second generation.","model_numbers":"Adds exact Black retail manufacturer SKU 882826-0010 from product header. Original case regulatory model 441408 and earbud regulatory models 408L/408R remain separate. No second-generation 444965 case added."}},{"url":"https://support.bose.com/article/quietcomfort-ultra-earbuds-specifications?language=en_US","kind":"manufacturer_page","accessed":"2026-10-07","fields":["spec_sheet_url","bluetooth_profiles"],"notes":{"spec_sheet_url":"Official Product Specifications support article identifies QuietComfort Ultra Earbuds, Sold from 2023. Public indexed specification body read. Direct page currently renders an empty support shell. This is an HTML specification sheet, not a claimed PDF download or second-generation page.","bluetooth_profiles":"Official original Sold from 2023 support Specifications lists Audio/Video Remote Control Profile AVRCP, alongside A2DP/HFP. Existing A2DP/HFP retained. Listed Bluetooth Low Energy BLE is a radio/control transport, so it is not used to assert LE Audio content support or stored as an audio profile."}},{"url":"https://www.techadvisor.com/article/2117356/bose-quietcomfort-ultra-headphones-review-2023.html","kind":"measurement","accessed":"2026-10-07","fields":["measured_microphone_notes"],"notes":{"measured_microphone_notes":"October 26, 2023 comparison explicitly includes original QC Ultra Earbuds alongside two over-ear models. Reviewer called a home answering machine from smartphone while playing cabin noise at 85 dB on Sonos Era 100, then restaurant noise at 75 dB. Earbud-specific result is retained, not over-ear result. Phone/codec, firmware, weighting and mic distance unstated. Qualitative call finding, no scalar noise ratio inferred."}},{"url":"https://www.on-mag.fr/index.php/topaudio/tests-auditions/25606-test-bose-quietcomfort-ultra-earbuds-des-ecouteurs-true-wireless-excellents-partout-ou-presque","kind":"review_site","accessed":"2026-10-07","fields":["chipset","microphone_count"],"notes":{"chipset":"November 11, 2023 exact original-earbud review Specifications explicitly names Puce Bluetooth 5.3 Qualcomm S5. Independently read full original article via normal public HTTP 200 during verification. No S5 generation or exact QCC silicon part number inferred from successor/predecessor.","microphone_count":"Same exact original 2023 Specifications explicitly says four microphones per side in calls. Eight across both earbuds. Source explicitly names call role, rather than deriving role from existing eight-total count. ANC-only count remains unproved. No second-generation speech vibration sensor inherited."}},{"url":"https://www.whathifi.com/headphones/wireless-earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen","kind":"review_site","accessed":"2026-10-07","fields":["driver_type"],"notes":{"driver_type":"What Hi-Fi exact Gen 2 review Sound paragraph explicitly reports Bose confirmed the driver is the same between new and old Ultra Earbuds. This manufacturer hardware bridge supports first-generation driver technology using the reliable exact Gen2 dynamic-driver table. No tuning, measurements, new case or disputed diameter transferred. Main approved the unchanged-component chain."}},{"url":"https://www.techradar.com/audio/earbuds-airpods/bose-quietcomfort-ultra-earbuds-2nd-gen-review","kind":"review_site","accessed":"2026-10-07","fields":["driver_type"],"notes":{"driver_type":"Exact second-generation review Specifications explicitly states dynamic driver technology. What Hi-Fi separately reports Bose confirmed the same driver in Gen 1 and Gen 2, establishing applicability to retained original 2023 earbuds. Only technology transferred under this explicit manufacturer bridge. Its 9.3 mm versus 10 mm inconsistent diameter statements are omitted, along with all successor measurements and case features."}},{"url":"https://assets.bosecreative.com/m/157ea573fd945c2e/original/885502_OG_QCUE-HEADPHONEIN_en.pdf","kind":"manual","accessed":"2026-10-08","fields":["battery_life_claimed"],"notes":{"battery_life_claimed":"The exact manufacturer guide on printed page 39 gives up to 6 hours with Bose Immersive Audio Off and up to 4 hours with it On after a full charge. Both music rows use Quiet Mode with full active noise cancellation, Bluetooth A2DP streaming at 75 dB SPL playback loudness, and all three equalizer bands at zero. Manufacturer testing used production-representative units in June 2023 with a variety of music tracks. The Bluetooth codec and Immersive Still/Motion setting are unspecified, so neither is inferred. These are manufacturer claims, not independent reviewer measurements. Both rows are the earbuds alone from one charge. The case provides three additional full recharge cycles, but a total hour figure is not calculated."}},{"url":"https://www.soundguys.com/bose-quietcomfort-ultra-earphones-vs-bose-quietcomfort-earphones-ii-102644","kind":"review_site","accessed":"2026-10-23","fields":["predecessor"],"notes":{"predecessor":"SoundGuys calls the QuietComfort Ultra Earbuds a direct successor to the QuietComfort Earbuds II."}}],"fields_filled":83,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}