Features
Bone conduction technology
Answer incoming call freely and safely
Conveniently use in office, during morning exercise and when riding bicycles
Supports Bluetooth V3.0+EDR
Ultra-fast audio transter
Adopts advanced audio processing technology
Can connect 2 Bluetooth enabled devices synchronously
General Specs 
Brand & ModelWalson E-free 
TypeWireless Stereo Bluetooth Headset  
ColorBlack
Bluetooth VersionV3.0+EDR
Effective Range 10 m
Charging TimeAbout 3 hours
Standby TimeAbout 10 days
Music TimeUp to 6 hours
CompatibilityBluetooth digital devices
Input5.0V - 140mA