The ergonomically-designed NoiseHush NX85 stereo headset delivers superior sound for phone calls and music through mobile phones; tablets; MP3 players and laptops. It features a patented bass system and high-grade 10mm driver unit that can reproduce high definition; bass-driven sound without the need for batteries! The in-line microphone is acoustically tuned to filter out external noise; ensuring that callers can hear you clearly even in the noisiest environments; and the one-touch track/talk remote button makes it easy to switch between music and phone calls. The snug- fitting in-ear gel isolates external noise; and provides maximum comfort for hours of enjoyment..