Speaker: 8W 66mm plus 

Response Frequency:100Hz- 18KHz

FM Broadcast Band: 87.5 MHz- 108MHz 

Signal to Noise Ratio: 80db

Wireless Version: 5.0 + EDR

Working Distance: Up to 10 Meters

Input Voltage: DC 5V ( 500mAh)

Built in Battery: 2000mAh

Dimensions: 100*90*223mm