Features:
1. Support handsfree call
2. Support TF card
3. Support USB AUX
4. Main material: plastic

Specifications:
Bluetooth: 2.1 version
Output power: 3W 
Bluetooth profiles supported: HSP, HFP, A2DP and AVRCP
Frequency Response: 20HZ~20KHZ
Charging input voltage: DC 5V
Operating distance: 10 meter
Battery logevity: phone call 12 hours;  music play 3 hours; standby 400 hours
Dimention: dia 6.7cm *  H 9.5cm