Supports Handsfree ， Bluetooth ， Loudspeaker ， TF Card Music Playing                                        

Bluetooth Version V3.0+EDR

Protocol AVRCP ， A2DP

Transmission distance W/O obstacles 10m

Loudspeaker Output:3W

Frequency Response:280HZ-16KHZ

Signal-to-Noise≥95db

Distortion:≤0.5%

Battery Voltage Capacity: 520mAh

Battery Charging Voltage:5V±0.5V

Battery Charging Time:2 Hours

Working Time: About 4-6 Hours