WSTER 1838 Bluetooth Speaker

WSTER WS-1838 High Sound Quality Wireless Bluetooth Speaker
Product Description
Play USB/TF card in the mp3 audio file
External audio input
External power charging interface
FM auto scan radio
Speaker with a wireless system
Specification :
Input DC-5V
Built-in battery
Frequency response 150-18000 Hz
Power output RMS 10W=THD 10%
FM 87MHz-108 MHz
Audio noise ratio 90db
Battery capacity:1800mAh
Voltage 3.7V
Normal volume playing time 3-4 hours
The speaker power: 4? / 5 w x 2