Usage：＂1. Plug and play. 2. Do not use it with high power players. 3. Function button: when a call comes, press once to answer. During a call, press once to end the call; for some cellphone, you need to long press the function button to hang up. When the music is playing, press once to pause, twice for the next track, three times for the previous track.＂
Feature：With a secure and comfortable fit.
Caution：Do not pull it. Keep away from fire and water. Avoid contact with high-temperature objects.
