BL1 Bluetooth headset, single ear with charging box 300 mAh

Bluetooth version: V5.0 + EDR;
Use distance: 10 meters (open environment);
battery capacity:
* Headphone: 50mAh;
* Charging case: 300 mAh
Charging time:
* Headphone: ≤60 minutes;
* Charging case: ≤120 minutes;
Use time: 3-4 hours (after fully charged);
Standby time: about 240 hours;