Bose Ultra Open Earbuds vs Anker soundcore AeroFit 2 Pro

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Ultra Open Earbuds compared with AeroFit 2 Pro

	BoseUltra Open Earbuds	Anker soundcoreAeroFit 2 Pro
Overview
Released
Released	February 2024	January 2026
Sound
Type
Type	Open-ear	Open-ear
Noise cancelling
Noise cancelling	No	Yes
Spatial audio with head tracking
Spatial audio with head tracking	Yes	Yes
Driver size
Driver size	–	11.8 mm
Bluetooth codecs
Bluetooth codecs	SBC, AAC and aptX Adaptive	SBC, AAC and LDAC
Drivers
Drivers	Bose OpenAudio, a transducer in a tightly controlled acoustic structure that aims sound at the ear canal with little leakage	11.8 mm composite drivers
Noise cancelling detail
Noise cancelling detail	–	Adaptive ANC 3.0 operates in the Focus form at ear-hook positions 4 and 5. Open-ear Awareness form uses positions 1 and 2; noise cancellation and fit depend on ear shape.
Audio features
Audio features	Bose Immersive Audio (Still keeps the sound in place as you turn your head; Motion lets it follow) using an onboard IMU; Auto Volume adjusts the volume to the noise around you; three-band EQ in the Bose app; aptX Adaptive with Snapdragon Sound devices	HearID custom EQ and app EQ presets; spatial audio with head tracking. LDAC requires a compatible Android source.
Battery
Listening time (maker's claim)
Listening time (maker's claim)	Up to 7 hours	Up to 5 hours
With the case
With the case	Up to 26.5 hours	Up to 24 hours
Wireless charging
Wireless charging	No	Yes
Battery life detail
Battery life detail	Bose UK's page gives up to 7 hours per charge (4 hours with Immersive Audio or Auto Volume on) and up to 19.5 more hours from the case (12 hours with Immersive Audio on); the launch press release and owner's guide give 7.5 hours per charge and 27 hours in total (3.5 hours per charge with both Immersive Audio and Auto Volume on); up to 48 hours connected but not playing	Maker FAQ at 50% volume: up to 5 hours with ANC and 24 hours including case, or 7 hours in open-ear form and 34 hours including case. With LDAC, about 3 hours with ANC or 6 hours open-ear. Calls at 60% volume: about 4 hours in either form. Main figures use ANC on.
Charging case
Charging case	USB-C; earbuds charge in up to 1 hour, the case in up to 3 hours; a wireless charging case cover is sold separately	USB-C and Qi wireless charging. Each earbud: 60 mAh, about one hour to charge. Case: 750 mAh, about two hours wired or four hours wirelessly; wireless charging maximum 3 W (maker FAQ).
Fast charging
Fast charging	10 minutes in the case gives up to 2 hours of playback	Ten minutes charging earbuds provides up to 3.5 hours playback; no fast-charging claim for the case.
Design
Weight (each earbud)
Weight (each earbud)	6.4 g (better)	10.4 g
Water and sweat resistance
Water and sweat resistance	IPX4	IP55
Bluetooth
Bluetooth	5.3	6.1
Two devices at once
Two devices at once	Yes	Yes
Controls
Controls	A physical button on top of each earbud's battery barrel for play, pause, skip, volume and calls; press-and-hold shortcut customisable in the Bose app (for example Switch Source)	Customisable physical button controls and case pairing/reset button. No wearing detection.
Microphones
Microphones	–	Four microphones with AI call-noise reduction
Fit and ear tips
Fit and ear tips	Cuff-shaped design that clips onto the side of the ear, with a silicone-coated flex arm joining the speaker to a battery barrel behind the ear; plastic (PC-ABS), metal and silicone	Five adjustable ear-hook positions. Maker specifies the ANC form for an ear bowl wider than 16 mm; an ear bowl of 16 mm or less may not support ANC form and should use open-ear form. Each earbud weighs 10.4 g (UK maker).
Case weight
Case weight	0.097 lb (about 44 g)	88.2 g (UK maker)
Water resistance detail
Water resistance detail	IPX4 for the earbuds	IP55 applies to earbuds; maker FAQ states the charging case is not water-resistant. Not for swimming or diving.
Works with
Works with	Bose app (launched with Bose Music) for iOS and Android; multipoint connection to two devices since a July 2024 update; Google Fast Pair; Personal Surround Sound as rear speakers with the Bose Smart Soundbar (2024)	soundcore app, two-device connection and single-earbud use. Current AI Translation requires app 3.8.7 or later and a network connection. LDAC is not available on iOS.
Colours
Colours	Black and White Smoke at launch; Bose UK has since sold several limited editions, currently Desert Gold	Black, Purple, White and Blue on the current UK maker page.
In the box
In the box	Two earbuds, charging case, USB-C (A to C) cable (30 cm), safety sheet	–