{"data":{"slug":"bose-ultra-open-earbuds-2nd-gen","type":"earbuds","brand":"Bose","name":"Ultra Open Earbuds (2nd Gen)","aliases":["Bose Ultra Open 2 Earbuds","ULT2-HEADPHONEOPN"],"release_date":"2026-10-01","url":"https://arkivo.dev/earbuds/bose-ultra-open-earbuds-2nd-gen","specs":{"series":null,"model_numbers":["897806-0010","444638","638L","638R"],"gtins":["017817862714"],"announce_date":"2026-09-17","status":"available","predecessor":"bose-ultra-open-earbuds","successor":null,"launch_price_usd":299,"launch_price_eur":299.95,"markets":["US"],"colors":["Black","White Smoke","Cherry Chocolate","Olive Green","Sky Pink"],"manufacturer_url":"https://www.bose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.html?dwvar_ULT2-HEADPHONEOPN_color=BLACK","spec_sheet_url":null,"manual_url":"https://assets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdf","eprel_registration_number":null,"warranty_years":1,"segment":null,"form_factor":"open_ear","bud_shape":"ear_cuff","single_bud_use":"either","rgb_lighting":null,"drivers":[{"type":"dynamic","role":null,"size_mm":null,"count":1}],"driver_type":"dynamic","driver_size_mm":null,"drivers_per_side":1,"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":null,"onboard_eq":null,"eq_bands":3,"eq_presets":["Bass Boost","Treble Reducer"],"volume_limit_db":null,"virtual_surround":["Bose Immersive Audio","Cinema Mode with Bose TrueSpatial"],"head_tracking":true,"anc":false,"anc_type":null,"anc_mic_count":null,"anc_adaptive":null,"anc_levels":null,"anc_claimed_attenuation_db":null,"transparency_mode":null,"transparency_adjustable":null,"adaptive_audio_mode":null,"conversation_detection":null,"wind_noise_reduction":null,"measured_frequency_response_notes":"Bass extends lower than the first generation but remains below the review preference curve below about 80 Hz. Treble is less harsh than the original. The review reports bass distortion at higher listening volumes.","measured_bass_amount_db":null,"measured_treble_amount_db":null,"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":"Artificial test-head recordings have clear voice in quiet conditions. Office and street noise suppression also removes much of the voice, leaving it muffled. The windy sample contains almost no audible speech. The non-vibrating test head cannot activate the voice pickup units as a real person would, so real calls may differ.","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":false,"codec":null,"hours":13.0167}],"measured_battery_life_h":13.0167,"measured_battery_life_with_case_h":null,"measured_charge_time_min":null,"measured_weight_g":null,"microphone_count":2,"microphone_count_total":2,"voice_pickup_sensor":null,"microphone_noise_reduction":"ai","voice_call_bandwidth":null,"mute_button":null,"sidetone":null,"chipset":null,"connection_types":["bluetooth"],"bluetooth_version":"5.4","bluetooth_codecs":["SBC","AAC","aptX Adaptive"],"bluetooth_profiles":null,"bluetooth_le_audio":null,"auracast":false,"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":"Google Fast Pair","requirement":"Android 6 or higher, Bluetooth and Location enabled, Google Play Services notifications enabled."},{"feature":"Snapdragon Sound / aptX Adaptive","requirement":"Snapdragon Sound-certified source device, such as a compatible Android device."},{"feature":"Device voice control","requirement":"Assign an earbud shortcut in the Bose app. Uses the connected device's voice assistant."},{"feature":"Spotify Tap","requirement":"Assign an earbud shortcut in the Bose app and use the current Spotify app."}],"official_license":null,"battery_capacity_mah":null,"battery_user_replaceable":false,"battery_life_claimed":[{"mode":"anc_off","codec":null,"spatial_audio":false,"with_case":false,"hours":9},{"mode":"anc_off","codec":null,"spatial_audio":true,"with_case":false,"hours":5},{"mode":"anc_off","codec":null,"spatial_audio":false,"with_case":false,"hours":5},{"mode":"anc_off","codec":null,"spatial_audio":true,"with_case":false,"hours":4}],"battery_life_max_h":9,"battery_life_anc_on_h":null,"battery_life_anc_off_h":9,"battery_life_with_case_h":null,"battery_life_with_case_anc_on_h":null,"talk_time_h":null,"charge_time_0_100_min":60,"charging_notes":"Bose lists up to 19.5 additional hours from the case with Immersive Audio and Auto Volume off, up to 11 hours with either on, and up to 8.5 hours with both on. The original manual instead lists 28.5, 16 and 12.5 additional hours. Total playback including case recharges is not resolved.","quick_charge_min":10,"quick_charge_playback_h":2,"case_battery_capacity_mah":400,"case_battery_user_replaceable":false,"charging_port":"usb_c","case_charge_time_min":180,"wireless_charging":true,"wireless_charging_standards":null,"wireless_charging_max_w":null,"case_speaker":null,"case_screen":null,"case_audio_transmitter":null,"control_types":["button"],"volume_control":"buttons","gesture_controls":["Press","Double-press","Triple-press","Press and hold","Press, then press and hold"],"customizable_controls":true,"voice_assistant":["Phone's native voice assistant"],"wear_detection":null,"sensors":["Voice pickup unit"],"heart_rate_sensor":null,"skin_temperature":null,"hearing_aid_feature":null,"medical_clearances":null,"hearing_test":null,"loud_sound_reduction":null,"health_features":null,"ear_tip_sizes":null,"ear_tip_materials":null,"stabilizers":null,"fit_test":null,"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":5.9,"dimensions_mm":{"width_mm":17.7,"height_mm":18.9,"depth_mm":27.7},"case_weight_g":49.9,"case_dimensions_mm":{"width_mm":26.8,"height_mm":47.5,"depth_mm":66},"hi_res_audio":null,"communication_certifications":null,"fcc_ids":["A94638L","A94638R"],"other_certifications":["Snapdragon Sound"],"in_the_box":["2 Bose Ultra Open Earbuds (2nd Gen)","Charging case","Quick Start Guide","Safety Sheet"],"cables_included":null},"variants":[],"sources":[{"url":"https://www.bose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.html?dwvar_ULT2-HEADPHONEOPN_color=BLACK","kind":"manufacturer_page","accessed":"2026-10-08","fields":["manufacturer_url","status","markets","colors","warranty_years","form_factor","bud_shape","single_bud_use","anc","microphone_count_total","connection_types","bluetooth_version","companion_app","companion_app_platforms","charging_port","ip_rating","in_the_box","weight_g","case_weight_g","dimensions_mm","case_dimensions_mm","charging_notes"],"notes":{"colors":"Exact US model family. Last three colors are limited editions. Reference is US Black 897806-0010.","warranty_years":"US one-year Bose limited warranty. Optional purchased BoseCare excluded.","microphone_count_total":"Technical table explicitly states 2 Microphones for the product. Launch press release separately states one dedicated microphone plus one voice pickup unit in each earbud. VPU is excluded from the physical microphone total.","weight_g":"Bud Single 0.013 lb, converted using 453.59237 g/lb and rounded to 5.9 g. Published mass is rounded and applies to one bud. Retailer 5.7 g is not used.","case_weight_g":"Case 0.110 lb, converted using 453.59237 g/lb and rounded to 49.9 g. Published mass is rounded. Retailer 48.2 g is not used.","dimensions_mm":"Maker-labelled one-bud axes: 0.746 in H x 0.697 in W x 1.091 in D. Converted with 25.4 mm/in and rounded to 0.1 mm.","case_dimensions_mm":"Maker-labelled case axes: 1.870 in H x 1.056 in W x 2.598 in D. Converted with 25.4 mm/in and rounded to 0.1 mm.","charging_notes":"Current FAQ and September 17 launch both state 19.5 additional case hours at standard playback. Manual printed page 31 and footnote 4 explicitly say 28.5 additional, not total. No case total is calculated or stored.","in_the_box":"Maker list is corroborated by exact US Abt and original manual. No USB cable or power adapter included. The charging accessory is the case, despite generic technical-table charging-accessory Yes."}},{"url":"https://www.bose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-gen","kind":"press_release","accessed":"2026-10-08","fields":["release_date","announce_date","launch_price_usd","bluetooth_codecs","microphone_count","microphone_noise_reduction","virtual_surround","sensors","predecessor"],"notes":{"announce_date":"September 17, 2026 announcement. US availability October 1, 2026, preorders September 19. Release date follows primary rather than SoundGuys October 2 metadata.","launch_price_usd":"US $299 launch price for Ultra Open Earbuds 2nd Gen. Sport Open $199 is a separate model.","microphone_count":"One dedicated microphone and one voice pickup unit in each earbud. Two physical voice microphones across pair, not four. VPU excluded. Retailer four-voice-mic table is not used.","microphone_noise_reduction":"SpeechClarity explicitly described as AI-enhanced voice-isolation technology.","bluetooth_codecs":"Both new models SBC/AAC. Ultra Open 2 additionally aptX Adaptive via Snapdragon Sound on compatible Android devices. No aptX Lossless or bitrate/sample-rate inferred.","release_date":"Official September 17, 2026 launch release explicitly states October 1 availability, including Bose.com and select retailers. US launch context.","virtual_surround":"Launch paragraph specifically names Cinema Mode powered by Bose TrueSpatial, spatializing video/podcasts with centered dialogue. Manual separately proves Bose Immersive Audio and its Still/Motion settings.","sensors":"Launch release: each earbud has one dedicated microphone and one voice pickup unit. Bose does not say how the unit senses speech, and its FAQ says the earbuds do not use bone conduction for sound. Stored as a verbatim sensor name only. voice_pickup_sensor stays empty.","predecessor":"Bose's September 2026 release calls the Ultra Open Earbuds (2nd Gen) the next generation and compares them with the first-generation model."}},{"url":"https://assets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdf","kind":"manual","accessed":"2026-10-08","fields":["manual_url","model_numbers","fcc_ids","eq_bands","virtual_surround","head_tracking","multipoint","multipoint_device_count","paired_device_memory","fast_pair","wireless_range_m","feature_requirements","battery_life_claimed","charge_time_0_100_min","case_charge_time_min","quick_charge_min","quick_charge_playback_h","wireless_charging","control_types","volume_control","gesture_controls","customizable_controls","firmware_updatable","other_certifications","battery_user_replaceable","case_battery_user_replaceable","case_battery_capacity_mah","voice_assistant"],"notes":{"model_numbers":"US Black SKU from exact retailer source also cited below. Original multilingual guide regulatory printed pages 4 and 7: case 444638, left 638L, right 638R.","eq_bands":"Printed page 19 explicitly lists bass, midrange and treble adjustment in Bose app. At high volumes adjustments may be reduced to avoid distortion.","virtual_surround":"Printed pages 21 to 24 Immersive Audio Off/Still/Motion and Stereo/Immersion/Cinema listening modes. Cinema uses Still plus video spatialization. Current maker/launch names Cinema TrueSpatial.","head_tracking":"Printed page 21 Still holds virtual speakers in position while head moves, then recenters after stopping. Motion setting follows the user. No source-specific spatial content required.","paired_device_memory":"Printed page 35 says up to six devices stored, separately two actively connected. No current exact support revision found establishing a different memory count.","wireless_range_m":"Printed page 36 explicitly gives 30 ft or 9 m. Use maker metric value rather than converting rounded 30 ft to 9.144 m.","battery_life_claimed":"Printed page 31 footnote 3: Bose April 2026 production-representative units, IEC 60268-1 pink noise via Bluetooth A2DP, RSSI -75 dBm, playback loudness 75 dBA, three-band EQ zero. Codec not stated. Rows in order: Immersive Audio Off + Auto Volume Off 9 h, Immersive On + Auto Volume Off 5 h, Immersive Off + Auto Volume On 5 h, both On 4 h. ANC absent. Earbuds-only maxima. These four claims are explicit, not a combined 5 h unspecified condition.","charge_time_0_100_min":"Printed page 31 earbuds up to 1 h. Depleted earbuds charged to 100% in a fully charged case. April 2026 maker testing.","case_charge_time_min":"Printed page 31 charging case up to 3 h wired. Time varies with earbuds inside case. Qi charging time not specified.","quick_charge_playback_h":"Printed page 31 footnotes 1 and 2 depleted earbuds 10 min in fully charged closed case, then A2DP playback 75 dBA, EQ zero, Immersive Off and Auto Volume Off, up to 2 h. Codec unstated.","customizable_controls":"Printed page 20 independent press-and-hold shortcuts per earbud. Does not claim all button actions can be remapped.","firmware_updatable":"Printed page 43 automatic updates through connected Bose app when available. Planned Find Hub/Alexa+/Apple Music features are not stored as available without release evidence.","other_certifications":"Printed page 40 explicitly names Snapdragon Sound technology, paired with certified compatible source device.","wireless_charging":"Printed page 29 supports a compatible third-party wireless charger sold separately. Charging standard not named.","battery_user_replaceable":"Regulatory and legal information, English printed page 5: \"DON'T attempt to remove the rechargeable lithium-ion battery from this product. Contact your local Bose retailer or other qualified professional for removal.\" No user replacement procedure is documented. Page 3 also says to contact Bose customer service for battery service options.","case_battery_user_replaceable":"Same page 5 statement covers the product, listed as Model 444638 Wireless Earbuds with Charging Case. No user case battery procedure is documented.","case_battery_capacity_mah":"Regulatory information, English printed page 6, lists \"Output Capacity: 400mAh (charge case)\" next to the case input rating of 5 V, 1 A. The label says output capacity and gives no typical or rated qualifier. The case has no USB output, so it is read as the case battery capacity. Not charging input current.","voice_assistant":"Printed page 25 Device Voice Control: a shortcut set in the Bose app opens the connected device voice control through the earbud microphones. The product page also names Amazon Alexa with Alexa+ access, but the launch press release says Alexa+ support arrives with a firmware update after October 1, so Alexa is not stored."}},{"url":"https://www.bhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.html","kind":"retailer","accessed":"2026-10-08","fields":["model_numbers","gtins","drivers","driver_type","compatible_platforms"],"notes":{"gtins":"Exact US Black MFR 897806-0010 UPC 017817862714.","drivers":"Exact model specifications explicitly list Dynamic and 1 per Earpiece. Acoustic role and diameter not published. No transfer from first generation or separate Sport Open model.","compatible_platforms":"Exact listing app-compatible Android and iOS. Generic Bluetooth computers also supported by maker, but named Windows/macOS/Linux platform support is not stated.","driver_type":"Exact retailer Dynamic entry. Source microphone 4, NFC, touch-sensor and supplied-cable claims contradict stronger primary documents and are not used.","model_numbers":"Exact US Black retailer listing MFR 897806-0010. Regulatory 444638/638L/638R are separately proved by the original manufacturer guide."}},{"url":"https://www.soundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060/","kind":"review_site","accessed":"2026-10-08","fields":["auracast","eq_presets","measured_battery_life","measured_frequency_response_notes","measured_microphone_notes"],"notes":{"auracast":"Exact October 7, 2026 review explicitly says no Auracast. Bluetooth LE Audio capability itself is not stated and remains unknown.","eq_presets":"Review names Bass Boost and Treble Reducer as examples. Stored list only contains these proven names, not an inferred complete preset inventory.","measured_battery_life":"One-week review of maker-supplied exact 2nd Gen Cherry Chocolate 897806-0030. Reported standardized battery test 13 h 1 min converted to 13.0167 h. ANC absent. Review frames this as standard playback before reduction with Immersive Audio/AutoVolume, but does not explicitly state those test flags, codec, firmware, source or level. These remain unknown. Header 10 g and October 2 release metadata not used.","measured_frequency_response_notes":"Exact review objective measurements compare with the SoundGuys headphone preference curve. No numeric target deviations or graph-derived values stored.","measured_microphone_notes":"Exact review quiet, office, street and windy recordings use an artificial test head that does not vibrate like a real human head. The voice pickup units cannot work as they do on a real person, so actual calls may differ. These sample results cannot establish complete real-person VPU-assisted call performance."}},{"url":"https://www.bose.de/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.html","kind":"manufacturer_page","accessed":"2026-10-10","fields":["launch_price_eur"],"notes":{"launch_price_eur":"Bose Germany store showed 299,95 EUR incl. VAT on 2026-10-10 with no strike-through or discount, nine days after the October 1 release. Bose France showed the same 299.95 EUR. Neither page labels the figure as a launch price. It is read as the launch list price because the product is days old. The first-generation model sits at 349,95 EUR on the same page."}}],"fields_filled":71,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}