1. Remarks: Both ears are available
2. Function: Hear the sound
3. Material: ABS
4. Size: about 4.7x1.4cm
5. Battery capacity: 50mah
6. Working time: 80-100 hours
7. Charging time: 4-6 hours
8. Power supply mode: USB charging/built-in lithium battery
9. Frequency response range: 300-5000Hz

Features:
1. Comfortable close-to-ear, non-sense design
2. Small and easy to take away
3. Smart chip, active noise reduction
4. Cant get rid of madness, light and free

packing list:
Packing box x 1
Storage box x 1
Manual x 1
Charger x 1
Cleaning brush x 1
Hearing aid x 1
Silicone earplugs x 4