RS-1

 Bluetooth chip: JL6976D 
Bluetooth version: 5.0
Effective range: 10M
Frequency range (Hz)﹕20HZ‐‐20KHZ
Impedance (ohm)﹕32Ω
Receiving sensitivity (dB)﹕88dBm
Ear Battery: 30mAH
Power battery:250mAH
Talking time(H)﹕5H
Music time(H)﹕5H
Standby time(D)﹕10days  Charging time(H)﹕2H
USB port: Lightning
Product weight﹕38g