Earbud Fit Guide

Detailed model reviews

Understand the earbuds behind the name.

Compare wearing style, noise control, device connections and charging arrangements. Each assessment explains the documented features, their operating conditions and the tradeoffs to check before buying.

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Wireless-earbud models assessed

Deep Plum Bose QuietComfort Ultra Earbuds (2nd Gen) and a White AirFly Pro 2 3.5 mm Bluetooth transmitter, shown together without a bundle cartonDeep Plum / White set components · captured selector combination

Bose

Bose QuietComfort Ultra Earbuds (2nd Gen) + AirFly Pro 2 Set (Deep Plum / White)

A current Bose U.S. set page whose captured default configuration identifies Deep Plum QuietComfort Ultra Earbuds (2nd Gen), component QCUE2-HEADPHONEIN-DPPLM-WW, and one White AirFly Pro 2 transmitter, component AFPRO2-3_5MM-TRANSMITTER-WHT. The transmitter adds a 3.5 mm audio-jack-to-Bluetooth route; it does not change the earbuds' sealed fit or ANC generation.

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Graphite MOMENTUM True Wireless 5 earbuds in their case beside the BTD 700 USB-C dongle and USB-A adapterGraphite MTW5 + BTD 700 set · Sennheiser U.S. image

Sennheiser

Sennheiser MOMENTUM True Wireless 5 + BTD 700 Set (Graphite)

The official U.S. Graphite set pairs the MOMENTUM True Wireless 5 Graphite earbuds (article 700350) with a BTD 700 Bluetooth USB dongle. The earbuds retain their sealed in-ear ANC, case, codec and Multipoint characteristics; the separately documented dongle adds a USB audio route for compatible phones or computers, not a new earbud codec or an assured low-latency gaming mode.

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Looking up an earlier model?

Use these guides to check a model you already own or a specific seller listing. Compare the exact model, condition and included equipment.

Wireless-earbud models assessed

Bose QuietControl 30 Black neckband headphones with two in-ear tips and an inline remoteQuietControl 30 · Black

Bose · Earlier model

Bose QuietControl 30 wireless headphones, Black

Earlier U.S. Black neckband-style Bluetooth in-ear headphones with adjustable active noise cancellation. Bose's manual describes 12 cancellation levels from full awareness to maximum, up to two connected devices with one playing source, and up to 10 hours from a full charge. That general battery maximum is not tied to an ANC-on test condition, and the package has a storage carry case rather than a charging case.

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Bose SoundSport Pulse in Power Red with cable-connected earbuds and inline remoteSoundSport Pulse · Power Red

Bose · Earlier model

Bose SoundSport Pulse wireless headphones, Power Red

Earlier U.S. Power Red Bluetooth sports earbuds with a wired connection between the earpieces and a left-ear heart-rate sensor. Bose documents up to five hours per charge, a StayHear+ Pulse canal-opening tip and two active device connections with one playing source. The heart-rate feature requires a secure left-ear fit and compatible software; no IP code, codec, Bluetooth version or charging case is established.

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Bose Ultra Open Earbuds first-generation Desert Gold component, showing two cuff-style earbuds without the charging case or wireless coverDesert Gold earbuds · Bose U.S. component image, not full set

Bose · Earlier model

Bose Ultra Open Earbuds + Wireless Charging Case Cover Set (Desert Gold / Black)

A U.S. first-generation Ultra Open Earbuds set. Bose identifies the included earbuds component as ULT-HEADPHONEOPN-DSGLD-WW (Desert Gold) and the included Black wireless charging case cover as CMWB-FULT_WLSCH-COVERCASE-BLK. The covered case configuration supports wireless charging; the open-cuff earbuds themselves remain the original non-ANC model.

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Black Sennheiser CX 350BT sealed-tip neckband earphones with inline controlBlack Sennheiser CX 350BT neckband earphones

Sennheiser · Earlier model

Sennheiser CX 350BT (Black)

The U.S. Black 508382 is an earlier sealed-tip Bluetooth neckband. Its SEBT1 manual lists SBC, AAC, aptX and aptX Low Latency, two-device multipoint is described on Sennheiser's matching-model product page, and the manual specifies up to ten hours via SBC. Sennheiser marks it end-of-life; ANC, a water-resistance rating and a charging case are not documented.

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Black brushed-matte Sennheiser CX Plus SE True Wireless left and right earbudsBlack brushed-matte CX Plus SE earbuds · Sennheiser U.S. product image

Sennheiser · Earlier model

Sennheiser CX Plus SE True Wireless (Black)

Sennheiser's earlier U.S. special-design edition pairs a brushed-matte Black finish with sealed in-ear ANC earbuds. The CX Plus family manual and support FAQ document Bluetooth 5.2, SBC/AAC/aptX/aptX Adaptive, single-device-at-a-time playback, USB-C case charging and IPX4 earbuds only. Its published eight-hour battery example is with ANC and Transparency off, not ANC-on runtime.

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Sennheiser CX SPORT black sealed-tip earbuds with yellow-green ear fins, joined by a black neckband cable and inline controls.Sennheiser U.S. CX SPORT article 508256 image

Sennheiser · Earlier model

Sennheiser CX SPORT

An earlier U.S. sealed-tip Bluetooth neckband, article 508256, with replaceable-size ear adapters and fins, a sweat/splash-resistance claim, up-to-six-hour A2DP music specification, and a manufacturer-stated two-device connection capability. The original manual lists SBC, AAC, aptX and aptX Low Latency; it does not document an ANC runtime or an IP water rating.

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Black Sennheiser MOMENTUM Sport earbuds with transparent tips, exact U.S. article 700304Black · article 700304 · Sennheiser image

Sennheiser · Earlier model

Sennheiser MOMENTUM Sport (Black)

The earlier U.S. Black 700304 is a tip-in-canal, semi-open sports earbud with hybrid adaptive ANC, left-ear heart-rate and body-temperature sensors, multipoint, IP55 earbuds/IP54 case protection, USB-C and Qi case charging. Its manual gives six hours per earbud charge only under an AAC, ANC-on, health-sensors-on test condition; it does not tie that duration to two-device use.

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Model identification references

Use these references to distinguish model names and versions. For a buying shortlist, start with the finder.

Wireless-earbud models assessed