Aigo CJ339 review: earclip headphones designed for open-ear listening
The Aigo CJ339 is an open-ear earclip headphone set with Bluetooth 6.0, 10mm dynamic drivers, and a charging case that shows battery status digitally. Each earbud has a 28mAh battery rated for up to six hours, while the 300mAh case extends total playback to about 24 hours. The product is positioned for comfort and environmental awareness rather than premium noise cancellation.
The CJ339 places its audio components around the ear rather than inside the canal, a format intended to keep users aware of nearby sounds. Its listing cites Bluetooth 6.0, a 10mm dynamic driver with a liquid-polymer diaphragm, and a 20Hz–20kHz range.
A 28mAh cell in each earbud is rated for six hours, with the 300mAh case raising total use to roughly 24 hours. The set weighs about 43g, measures 40 × 22 × 28mm, charges in around 1.5 hours, includes a microphone, and comes in grey, beige, or purple.
Open-ear earclip models like the CJ339 may appeal to walkers, commuters, exercisers, and office workers who want audio while retaining ambient awareness. This could encourage safer listening habits in some settings, though it may also expose users to more surrounding noise and reduce immersion. Its comfort-focused approach may broaden interest in open-ear audio, while not replacing noise-canceling earbuds for noisy travel or focused listening.