Enjoy beautiful, crisp sound with deep bass, while taking advantage of the latest technology. W04 earbuds automatically connect to the device, once the charging case’s cover is opened. Double tap to play or pause the music, tap to call on the voice assistant. These earbuds are very light: just 3.5g. They feature noise reduction for calls, Earplug dust and waterproof, up to 20 hours of music and 350 hours of standby (with the case). Half-in-ear design is perfect for those, who don't like the feel of regular in-ear earphones.