Baseus Encok W04 Earbuds Black has a super bass sound quality will let you enjoy beautiful, crisp sound with deep bass. automatically connect to your device, once the charging case cover is opened. Double tap to play or pause the music, tap to call on the voice assistant. They are very light: just 3.5 grams which is about 1/8th of an ounce! They feature noise reduction for calls, IP54 dust and waterproof, up to 20 hours of music and 350 hours of standby (with the case). Easily charge by using the type-c cable included.