Features:
1. The battery capacity of a single headset is 50mAh, with a 300mAh charging box, it can be used for up to 8 hours-20 hours on a single charge
2. Professional tuning, strong mid-bass, 360-degree high-definition stereo sound quality
3. IPX7 waterproof, sweat and rain, very suitable for outdoor sports
4. Universal compatible with Type-C interface, support wired/wireless charging
5. Bluetooth 5.1 chip, low latency, more stable transmission
6. Open the lid, plug and play, easy to touch with fingers
7. Built-in high-sensitivity microphone, enjoy crystal clear calls with both ears
8. Small and light, with lanyard, easy to carry

Specifications:
1. Type: In-ear
2. Bluetooth version: 5.1
3. Supported protocol: HSP/HFP/A2DP/AVRCP
4. Audio decoding: AAC/SBC
5. Speaker sensitivity: 99.5+/-3dB
6. Frequency response range: 20Hz-20KHz
7. Impedance: 32 ohms
8. Headphone power: 3mW (max)
9. Speaker diameter: 6mm
10. Music time: about 8 hours (the actual duration is related to the volume)
11. Talk time: about 6 hours (the actual length is related to the volume)
12. Standby time of charging box: more than 6 months
13. Charging input: DC 5V/1A
14. Number of cycles: 2.5 times
15. Headphone charging time: 1.5 hours
16. Charging time of the charging box: 1.5 hours
17. Charging box size: 64.9x30x30mm
18. Material: ABS