Features: 
Bluetooth + MP3 function support stereo music playing, phone calling... 
Support all audio devices that have Bluetooth capability, such as, cell phone ,tablet PC,laptop,computer etc. 
Best choice for listening music, watching movie, chatting online etc. 
With SD card insert, without any Bluetooth device, can still enjoy music any time any where. 
Cool shinning look adds the popular feel. 

Specification: 
Bluetooth V4.0 +EDR class2 
Support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 
RF Frequence Range: 2.402-2.480Ghz, 2.4G ISM band. 
Frequency Response:20 Hz - 20 KHz 
S/N Rate(Singnal to Noise Rate): 95 dB 
Effective Range: 10M(Above 32ft ) 
Sensitivity -84dBm / 0.1% BER 
Talking Time: 10 hour 
Standby Time: 250hour 
Charge Time: 2-2.5 hour (with Mini 5Pin micro USB plug charging port.) 
Operate Temperature: -4 ~ +131°F(-20 ~ +55°C)

Box Includes: 

1pcs Bluetooth Headphone 
1pcs USB Charger Cable 
1pcs User Manual