1. Material: ABS
2. Weight: about 27.4g
3. Function: hearing aid
4. Power supply mode: USB charging/built-in lithium battery
5. Battery capacity: charging compartment: 300mah, hearing aid 25mah
Features:
1. Comfortable close-to-ear, non-sense design
2. Small and easy to take away
3. Smart chip, active noise reduction
4. Can not get rid of madness, light and free
