Product parameter
Bluetooth version: 3.0 + EDR

Transmission power (MAX) : 4 DBM

Receiving sensitivity (TYP) : - 90 DBM

Frequency range: 2.4 G - 2.48 GHz

Within the range: 15 meters (straight line)

Audio signal to noise ratio: > = 75 db

Operating voltage: 3.7 V

battery capacity:400mah