1. Bluetooth version: V5.3
2. Transmission range: about 10m
3. Support protocol: A2DP1.3/AVCTP1.4/AVDTP1.3/AVRCP1.5/HFP1.5/SPP1.0/SMP/L2CAP4.2
4. Bluetooth chip: V5.3/JL 7003D4
5. Speaker driver unit: 13mm
6. Speaker power: up to 15mW
7. Impedance: about 20 ohms
8. Battery capacity: 400mAh for charging compartment, 35mAh for earphone
9. Standby time: about 120 days
10. Charging time: about 2H
11. Playback time: about 10-12H
12. Charging port: Type-C
13. Material: PC+ABS
14. Weight: about 58g

Features:
1. Bluetooth 5.3, stable signal, strong anti-interference, low power consumption
2. 16.2mm large moving-coil composite membrane speakers, sound stereo full, clear and bright, better sound resolution
3. Solid ear-hanging design, not into the ear, do not pinch the ear, non-sensory wear, long wearing not tired
4. ЗA safe fast charging, widely compatible, soft and durable
5. Dual-mic ENC call noise reduction, filtering environmental noise, accurate access to the human voice
6. Intelligent touch control, simple operation, easy to use
7. Ergonomic design, stable hanging ear, wild throw off, wearing headphones can still hear the external sound