Parameters
1. Bluetooth chip: JL-AD6973D4
2. BT version: V5.3
3. BT audio decoding: AAC, SBC
4. Supported protocols: HSP, HFP, A2DP, AVRCP
5. Working frequency: 2402-2480KHz
6. Headphone battery capacity: 35mAh
7. Shell battery capacity: 400mAh
8. Music time: 7 hours (70% volume)
9. Total play time: 35 hours (70% volume)
10. Talk time: 5 hours (70% volume)
11. Headphone standby time (connected): about 48 hours
12. Headphone charging input: 5V 200mA
13. Charging box charging input: 5V 1A
14. Charging input interface: Type-C
15. Headphone charging time: about 1.5H
16. Charging box charging time: about 1.5H
17. Waterproof level: IP54
18. Material: ABS+PC
19. Headphone weight: 3g
20. Net weight: 37.6g

Features
1. It adopts 13mm dynamic driver, with loud sound and HiFi sound quality, giving you a different listening experience.
2. 35 hours of playback time, ultra-fast charging, 7 hours of playback on a single charge, total listening time with charging box is 35 hours, 10 minutes of charging can provide 1 hour of listening.
3. Using Bluetooth 5.3 chip, it has stronger anti-interference ability, lower power consumption, automatic reconnection after opening the box, and easy to use.
4. Low-latency technology, audio and video synchronization, 65ms ultra-low latency.
5. DNS enhanced calls and DNS call noise reduction provide a clearer call experience.
6. Lanyard hole design, easy to carry, very suitable for travel, can be hung on a keychain or backpack.
7. Sloping design, close fit, more comfortable to wear.
8. Widely compatible with various Android, iOS, and Windows system devices.