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 300 amh
12:Play time around 3 hours
13:Dimensions 4.7*4.5 mm
14:Weight: 75g 15
15: Charging Time:around 2 hours
