Specifications:
 - Bluetooth Version: V5.1
 - Bluetooth range: 10 meters
 - Battery charging box: 250 mAh
 - Headset battery: 40mAh
 - Standby time: up to 200 hours
 - Autonomy: Up to 2.5 hours
 - Charging time: About 1.5 hours
 - Input voltage: 5V
 - Microphone: Integrated
 - Rechargeable: Type-C cable
 - Speaker unit: 10mm
 - Rated input power: 2mW
 - Maximum input power: 5mW
 - Impedance: 32ohm
 - Sensitivity: 112dB +/- 3dB
 - Frequency response: 20Hz - 20KHz