Product Materials: Silicone, TPE, ABS
Directions:Plug and play;Do not use high power player; Volume: push toward the + sign to turn up the volume, push toward the - sign to turn down the volume. 2.Answer button: click to answer when the call comes in, click to hang up when the call ends, click to pause/play when listening to music. Press twice for next song and press three times for previous song.
Precautions: 1. Long-time continuous use may cause damage to your ears; 2. Do not use when driving a vehicle.