Waterproof Shockproof Wireless Bluetooth Stereo Speaker for Outdoor Exercise and Shower 

 Specifications:

Bluetooth Version:BluetoothV4.0/2.1
Frenquency:2.402-2.480GHz.
MAX Power output:3W *2
MIC Sensitivity:-32db .
Receive Sensitivity:Better than +82dBm.
Range:20M
Data Transmission:Up to 3Mbps
UART Data Transmission Rate:115200bps .
Charing Voltage :4.8V –5.2V DC.
Working Voltage:3.7V –4.2V DC.
Working Current:300MA.
Quiescent Current:>1UA.
Speaker Battery :1200MAH.

 Pictures: