Bluetooth 2.1+EDR wireless transmission protocol
Bluetooth 2.1+EDR wireless transmission protocol supports up to 10M high-quality,stereo music enjoyment
Auto switch between phone call and music
Your headphone will automatically switch to calling mode with built-in microphone when calls coming in even if you are listening music
Built-in rechargeable lithium battery
Recharge by using the universal mini-USB cable—even while you’re still playing; 3-hour charging, 12-hour music enjoyment, 15-hour calling.