LM7

Chip: JL

Bluetooth version: 5.2        

Material: ABS                                                                                                

Battery capacity: 80mAh+500mAh

Charging time: approximately 2 hours

Usage time approximately: 20 hours                                                                                    

S/N:-64dBm

Transmission delay: 30MS

Receiving distance: 20 meters (in an accessible environment)