Product parameters: 1. Bluetooth version: V5.0 2. Bluetooth protocol: HFP / A2DP / HSP / AVR CP 3. Charging box battery capacity: 2600mAh 4. Headphone battery capacity: 60mAh 5. Charging box provides charging times: 50 times 6. Standby time: about 160 hours 7. Listening time: about 6 hours 8. Talk time: about 8-10 hours 9. Charging time: 40 minutes 10. Connection distance: 20 meters (obstacle-free) 11. Weight of a single earphone: 4.5g

http://olla.gr/g10-tws-bluetooth-5.0-wireless-bluetooth-earphone-with-charging-box-support-digital-display-and-hd-call-and-power-bank-white/