"1. The Bluetooth V5.1. Chip: Jerry 7003
2. Bluetooth effective distance: 10 meters
3. Frequency response: 2.402ghZ-2.480 GHz; Built-in battery: 180mAh
4. Talk/music time: 21 hours; Charging time: 2 hours; Standby time: 1 year
5. Switch freely, both ears can be worn
6. Lightweight design, comfortable to wear
7. Durable for commercial use"
