1:TF card function
2: Bluetooth voice call
3:Bluetooth version 4.0
4:Speaker size 4 CM
5:Speaker output 5W
6: Frenquecy-115HZ-13KHZ
7:S/N-≥80dB
8:Speaker Impedance-4Ω
9:Input-5V 1A
10:Transmission distance 10M
11:Battery capacity 600 amh
12:Play time around 4 hours
13:Dimensions 8.5*5.1 cm
14:Weight:151g
15: Charging Time:around 2 hours
