Material: Polar Fleece
Bluetooth version:V4.0+EDR
Transmission distance: 10M
Built in rechargeble lithium battery

4.0+EDR technology,compatible with most Bluetooth devices
Sweat absorption,comfortable for runing or sleeping
Fashion appearance,for listening wireless music and answering the phone call conveniently
Built-in Microphone,can be used for mobile phone hands-free system,easy to dial or answer calls
Easy Push Button Control
Support displaying Bluetooth Headset battery capacity on Apple mobile phones
Color:Yellow Blue Red Black Purple Grey Orange