Materials: ABS plastic                                                              

Functions:   Bluetooth/AUX/TF                               

Bluetooth Version：V5.0                                                            

Range: 10meters 

Frenquency：2.402-2.480GHz.

MAX Power output: 20W 

MIC Sensitivity: -32db

Receive Sensitivity :Better than +82dBm.

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.

Battery : 18650 /4500MAH.                                                       

Product Size :45.5*7.5*4.5CM