1. Convenient for watching movie without disturb other people, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly.
2. When in forest, it will be a good choice if you want to hear very slight sound.
3. Different size noise prevention earplug to choose
4. Use the most splendid lighium battery power supply, provides the battery charge ,rechargeable for 1000 times.
5. Packaged in a nice retail box which is perfect for retailling.
Max sound output: 127dB ± 4dB
Sound gain: 48dB ± 5dB
Total harmonic wave distortion: ≤5%
Frequency range: 250~3800Hz
Battery: Lithium battery
Input noise: ≤30dB
Voltage: DC 3.7V
Package Included :
1 x V-155 Hearing Aid
1 x AC charger adaptor
1 x Ear clip
4 x Units of earplug of different size
1 x Instruction Manual In English
Details pictures :