Bluetooth Version: V4.2+EDR

Receiver Distance: Up to 10 meters 

Working Time: Up to 6 hours

Support: TF/Micro-SD card

Battery:Rechargeble Lithium-battery(250mAh)

Clour:Red, Dark/Light Blue, White, Black

Functions:Bluetooth, Calling, Volume control, Switch songs, Answer/Reject a call, Hung up  phone, Redial, Voice prompt, Battery status, FM, MP3