Output voltage:3.7V-4.2V
Input:5.0V
Frequency Response:20HZ-20KHZ
Battery:1200mA
output power:45MM, 5W*2
Transmission distance >10M
Product Size: 17*7*17cm
Enqlish FM radio function
AUX in function,play music from MP3,PC,Mobile,ect; 
TF card music playback;