1. Material: ABS, electronic components
2. Bluetooth version: 5.1
3. Receiving distance: 10 meters
4. Voice prompt: support
5.Using mode: bluetooth/plug-in card
6. Battery capacity: 300mAh lithium battery
7. Charging time: about 1 hour
8. Standby time: about 150 hours
9. Playing time: about 40 hours
10. Polymer composite diaphragm, the sound quality is clearer
11. The memory collar can be bent at will, skin-friendly and comfortable
12. In-ear design, stable and not falling
13. Ergonomic design, comfortable to wear
14. HIFI stereo surround sound
15. Waterproof body + sealing elements, effectively waterproof
16. Card design, button operation, simple and convenient