1. Maximum volume output: 126dB +/-3dB 2. Base wave distortion: 8% 3. Frequency range: 450-5000 Hz4. Sound gain: 30dB +/-5dB 5. Battery capacity: 30mAh6. Operating voltage: DC1.2V 7. Input noise: 29 dB +/-3dB 8. Charging time: about 3h9. Operating time: more than 40h 10. List of accessories: main unit x 1, earbuds x 4, brush x 1, user manual x…