Product information:

Bluetooth version: V5.3
Transmission distance: 10 meters
Sensitivity (microphone): -38dbv/pa
Overcharge protection: 0.1 * 250mA=25mA
Working temperature/storage temperature: -20 ° C to 70 ° C
Battery capacity: 400mA
Product impedance: 4002
Charging time: about 1 hour (preferably more than 1 hour for the first charge)
Undervoltage protection: Vin=4.4V

Color classification: [Morning Mist White] Air Sensation Wear - Directional DT6.0 No Leakage -360 ° Panoramic Surround Sound - Call Noise Reduction [Star Shine Black] Air Sensation Wear - Directional DT6.0 No Leakage -360 ° Panoramic Surround Sound - Call Noise Reduction Yunyan White [Supreme Version] Stereoscopic Surround Sound -60 Hours Long Battery Life - Comfortable No Leakage Black [Supreme Version] Stereoscopic Surround Sound -60 Hours Long Battery Life ★ Comfortable No Leakage Yunyan White [Champion Version] Dolby Atmos -65 Hours Long Battery Life - Comfortable No Leakage Black [Champion Version] Dolby Atmos -65 Hours Long Battery Life - Comfortable No 

Packing list:

Wireless earphones * 1 pair, charging case * 1, instruction manual * 1, USB * 1