Sweat and Splash Proof: The W285BT is thoroughly tested at an IPX4 protection rating meaning that these earphones are both sweat and splash resistant. The perfect arrangement of headphones for every day work out. The inline controls are additionally appraised IPX4 so you can alter volume and playback, and they feature a mic, so you can answer calls rain or shine.Drivers produced using 9mm Moving Coils: The 9mm moving loop units are particularly tuned to give a fun and engaging sound. The drivers make a spatial stereo field for a more extensive sound stage. Edifier's sound mark is tuned particularly for intense low recurrence and clear high recurrence soundsHalf in-ear Design with Soft Eartips: The half-in-ear structure joined with the delicate silicone eartips gives a closer fit to your ear cavity limiting sound misfortune. The suspended ear confirms extra comfort and keeps these eartips in your ears.Stable Bluetooth Connection