Two devices. One clear decision.

LAUNCH DATE2 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Released	2026-10-01	2026-09-03
Status	Available	Available

ADDITIONAL INFORMATION3 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Launch Price (USD)	$299 (US launch price)	$299.95 (US launch price)
Notes	Personal Surround support with Bose Smart Soundbars removed versus 1st Gen	—
Price in Nigeria	₦418,600 (estimate, converted from US launch price)	₦419,900 (estimate, converted from US launch price)

PRODUCT OVERVIEW5 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Brand	Bose	Sennheiser
Category	Open-ear cuff true wireless earbuds	In-ear true wireless earbuds
Launch Date	September 17, 2026	August 20, 2026
Model Name	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Price	$299 (US launch)	$299.95 (US launch)

AUDIO SPECIFICATIONS4 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Driver Size	—	7 mm
Driver Type	Improved dynamic driver (deeper bass, higher volume), Bose OpenAudio technology	7 mm TrueResponse dynamic driver
Frequency Response	—	5 Hz - 21 kHz
Sound Features	Spatial audio: Immersive Audio; Cinema Mode with Bose TrueSpatial head tracking	Up to 24-bit/96 kHz (lossless)

FEATURES AND SOFTWARE8 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Active Noise Cancellation (ANC)	No (open-ear)	Yes, hybrid adaptive ANC with adaptive anti-wind
App Support	Bose app	Sennheiser Smart Control Plus
Customizable EQ	Yes, 3-band EQ in Bose app	Yes, 8-band graphic EQ in Smart Control Plus app
Other Features	Auto Volume, 3-band EQ (Bose app); Google Fast Pair	8-band graphic EQ, sound personalization (developed with Fraunhofer Institute), Dolby Atmos with head tracking, low-latency gaming mode; Google Fast Pair, Microsoft Swift Pair
Sound Modes	Immersion Mode, Cinema Mode, Stereo	Sound Personalization, genre presets, Dolby Atmos with head tracking, low-latency gaming mode
Touch Controls	No, physical button on each earbud (play/pause, track, volume, calls)	—
Transparency / Ambient Mode	—	Yes, Natural Transparency mode with anti-occlusion compensation
Voice Assistant Support	Phone's native voice assistant (Alexa+ planned)	—

CONNECTIVITY AND INTEGRATION4 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Bluetooth Version	5.4, range up to 30 ft (9 m)	6.0, class 1
Multipoint	Yes, two devices	Yes
Range	9 m (30 ft)	—
Supported Codecs	SBC, AAC, aptX Adaptive (Snapdragon Sound)	SBC, AAC, aptX, aptX Adaptive, aptX Lossless

BUILD AND DESIGN6 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Colors Available	Black, White Smoke, Cherry Chocolate, Olive Green, Sky Pink (last three limited edition)	Graphite, Cream, Copper, Denim, Lavender
Dimensions	Earbud: 18.9 x 17.7 x 27.7 mm; Case: 47.5 x 26.8 x 66.0 mm	Case with earbuds: 67.2 x 48.4 x 25.0 mm
Form Factor	Open-ear cuff true wireless earbuds	In-ear true wireless earbuds
Ingress Protection	IPX4	IP54 (earbuds only)
Materials	Polycarbonate and silicone; metallic cap with beveled finish; flex-joint cuff	—
Weight	5.9 g (single earbud), 49.9 g (case)	7 g (single earbud), 55 g (charging case), 62 g (total)

BATTERY CAPACITY AND CHARGING7 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Battery Life (Standby)	Up to 20 hours (connected, no audio)	—
Battery Type	—	Li-Ion, user-replaceable
Charging Port	USB-C, wireless charging case; full charge 1 hour	Qi wireless charging (v2.1); full charge approx. 1.5 hours
Device Battery Capacity	—	72 mAh (each earbud), 760 mAh (case)
Fast Charging	10 min = up to 2 hours	8 min = 1 hour playback
Total Playtime	Earbuds: Up to 9 hours (up to 5 hours with Immersive Audio); With case: Up to 19.5 additional hours (28.5 hours total)	Earbuds: Up to 12 hours (ANC off), up to 6 hours (ANC on); With case: Up to 40 hours
Wireless Charging	Yes, Qi	Yes, Qi

MICROPHONES AND VOICE FEATURES3 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Hands-Free Calls Support	Yes, Bose SpeechClarity	Yes
Mic Count	2	4
Mic Type / Noise Reduction	2 microphones, Bose SpeechClarity voice isolation	4 mics per earbud incl. bone-conduction mic; AI and beamforming de-noising

BOX CONTENTS7 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Charging Cable	Not listed in box contents (power adapter not included)	Yes, USB-C charging cable
Ear Tips (if earbuds)	No (open-ear cuff design)	XS, S, M, L ear tips
Extras (cases, clips, mounts, etc.)	Charging case	Charging case, battery replacement tool
Included Items	Earbuds, charging case, quick start guide, safety sheet (no power adapter)	—
Main Device	2 Ultra Open Earbuds (2nd Gen)	One pair of MOMENTUM True Wireless 5 earbuds
User Manual	Quick start guide, safety sheet	Yes, documentation
Warranty Card	1-year Bose limited warranty	1-year manufacturer warranty

COMPATIBILITY2 fields

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Operating Systems	Android, iOS (Bose app on Google Play and App Store); any Bluetooth device	Android, iOS
Supported Devices	Any Bluetooth-enabled phone, tablet or computer; preorders from 19 Sep 2026	Bluetooth devices; Google Fast Pair (Android), Microsoft Swift Pair (Windows)

KEY HIGHLIGHT1 field

Specification	Ultra Open Earbuds (2nd Gen)	MOMENTUM True Wireless 5
Highlight	The Bose Ultra Open Earbuds (2nd Gen) are cuff-style open-ear earbuds with an improved driver for deeper bass, Bose OpenAudio, Immersive Audio and Cinema Mode with TrueSpatial head tracking.	The Sennheiser MOMENTUM True Wireless 5 are premium earbuds with 7 mm TrueResponse dynamic drivers, hybrid adaptive ANC and support for aptX Adaptive/Lossless over Bluetooth 6.0.