S19 Heartful ENC noise cancelling BT headphones

1. BT v5.0, chip: Realtek RTL8763BMF.
2. Battery capacity: 90mAh. Charging for about 1 hour.
3. Calls / music time: 9 hours. Standby time: 200 hours.
4. Sizes: 99*67*31mm. Weight: 12g.
5. Double-mark ENC noise reduction, clearer calls.
6. Support Chinese and English language prompts, click multi-function key thrice in non-paired mode.