Yesido TWS21 Bluetooth 5.3 TWS Wireless Bluetooth Earphone (Black)

1. Chip: AD6983D2 2. Bluetooth version: V5.3 3. Receiving distance: 12m 4. Working hours: music for about 6 hours (volume 80%) 5. Standby time: 35H 6. Call time: 3H 7. Charging time: about 1.5H 8. Charging box battery model: 701535/3.7V/320mAh (with protection board) 9. Single ear battery capacity: 35mAh 10. Binaural battery life: 2-3 times 11. Using Bluetooth 5.3 chip, the connection and transmission are more stable, and the audio and video are synchronized with low latency. 12. Shallow in-ear design, ergonomic, light and comfortable to wear without pressing on the ears.