Lenovo C8 Bluetooth Sunglasses Wireless Headset Polarized Lens (Black)

1. Bluetooth version: V5.0+EDR
2. Transmission distance: 10-15m
3. Bluetooth protocol: HSP/A2DP/AVRCP
4. Frequency range: 2402-2480MHz
5. Battery capacity: 3.7V/120mAh
6. Music time: 4 hours
7. Talk time: 5 hours
8. Standby time: 200 hours
9. Charging time: 1.5-2 hours
10. Lens: UV400 polarized lens
11. Net weight: 31g