Soundcore AeroFit 2 Open-Ear Earbuds: features, specs and who they suit

The Soundcore AeroFit 2 (model A3874) are open-ear wireless earbuds. Instead of sitting inside the ear canal, they rest outside it on a hook, so you can listen to music while still hearing the world around you. Soundcore also includes a translation feature that works through its app.

What open-ear means

Conventional earbuds seal the ear canal. Open-ear designs leave it uncovered, and a small speaker aims sound toward the ear from just outside. Soundcore describes a soft, double-curved shape for all-day comfort and says it keeps you attuned to your surroundings. That can suit walking, cycling or an open office, where being aware of surrounding sound matters. Because the ear is open, bass is typically lighter than from sealed earbuds, and surrounding noise is not blocked.

Fit and sound leakage

Four levels of adjustable ear hook are listed, and Soundcore says they fit over 99% of ear shapes and sizes. Directional acoustics combine with the hook to point the sound toward your ear, which the brand says keeps audio private and limits leakage. Open-ear designs can still be heard by people nearby at high volume.

Drivers, bass and codecs

The drivers are 20 mm x 11.5 mm racetrack-shaped units, paired with what Soundcore calls BassTurbo acoustics. The brand claims twice the bass depth of the earlier model. The earbuds use Bluetooth 5.4 and support LDAC, a codec that sends more data than standard Bluetooth, for Hi-Res wireless audio when paired with a compatible device.

Translation and calls

Soundcore says the earbuds support real-time translation in 100 languages, and that it is free. The listing notes that the soundcore app must be version 3.8.7 or later and the earbud firmware must be up to date. The listing also mentions AI Clear Calls for voice calls.

Battery and durability

Playtime is listed as up to 10 hours on one charge, and up to 42 hours with the charging case. The case can charge on a wireless charger. The earbuds carry an IP55 protection class, which typically indicates protection against dust and water jets, but see the manual for exactly what it covers. Dimensions are about 2.2 x 1.5 x 0.6 inches, with a weight of about 0.2 lb.

Who they suit

AeroFit 2 suits walkers, runners, cyclists and office workers who want to stay aware of their surroundings, and people who find in-ear tips uncomfortable. They are less suitable if you want to block out noise on a plane or train, since the ear is deliberately left open.

What to check before you buy

• Surroundings: open-ear earbuds do not block noise, so they may not suit loud environments.
• Fit: try the four hook positions and confirm comfort with glasses or hats.
• Phone support: confirm that LDAC and the app work with your phone.
• Translation: update the app and firmware as the listing describes.
• Water and dust: read the manual on how the IP55 class applies.

The short version

• Open-ear wireless earbuds with four adjustable ear hook positions.
• Racetrack drivers, BassTurbo acoustics, Bluetooth 5.4 and LDAC support.
• Up to 10 hours per charge and 42 hours with the case; wireless charging.
• IP55 protection class and AI Clear Calls.
• App-based translation in 100 languages, with the required app and firmware versions.

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