Note:
Adjust volume to the minimum before wearing;
When you not use, turn it off for prootect prodect.
Convenient for watching movie, enjoying the drama, attending meeting, or having class,It could help you hear the sound clearly and loudly.
If you feel the whistling sound, please make sure you put the earplug tightly or if you use a right approciate size earplug.
(We can supply US and European plug,so you can leave a message for mention which plug you need ,thanks!)
