1. Wireless version: V5.1+BR+EDR+BLE
2. Support protocol: HFP 1.7, HSP 1.2, AVRCP 1.6, SPP 1.2, PBAP 1.0
3. Speaker diameter: 13mm
4. Use distance: 10m
5. Use time: about 6-7h
6. Standby time: about 640h (with charging case)
7. Frequency range: 2402 MHz-2480 MHz
8. Battery capacity: headset 55mAh, charging case 300mAh
9. Charging time: about 1-2h for headphones, about 2-3h for charging case
10. Input/Output: 5V 1A
11. Charging case size: about 7.5 x 5.5 x 3.5cm

Features:
1. 13mm speaker, clear sound quality without noise
2. Ergonomic ear-hanging design, sports running does not fall off
3. Sweatproof, waterproof and dustproof, comfortable to wear without feeling
4. Touch operation, simple and convenient
5. Support for single-ear, binaural use
6. Charging box with power display
7. Lightweight and portable