Specification:
Bran: Unbranded
Item Type: Ear Care/Battery model (GE-66), battery model AG13/LR44
Maximum output: 130±5dB,
Sound gain: 35±5dB,
Harmonic distortion: ≤10% (1000 Hz),
Equivalent input noise level: ≤32dB,
Frequency range: 300-4500 Hz,
Battery voltage: DC 1.5 v;
Size:55*16*10mm  
Accessories: Ear cap *3, battery *3

Operation Manual:
1. On button and off button. When not in use, make sure the switch is set to the off position to save energy;
2. The volume adjustment is divided into six levels. First adjust the volume to level I, and then slowly increase it to the appropriate volume required;
3. Open the battery box cover with your fingertips, and then install the battery (1.5 volt battery) according to the instructions;
4. This product is based on a 1.5V battery and can be purchased in many electrical appliance stores and department stores. The following brands of batteries are suitable for this product;
5. 123456”-Volume control 1” lowest. ” 6 “The loudest voice;

Package included:
1x Hearing aid

Note:
1. This product is not waterproof, so users must be careful to prevent water from entering the amplifier. If the sound amplifier gets wet, remove the batteries and place the sound amplifier in a warm place to dry;
2. Use it only when sound amplification is needed in movies, TV, etc.;
3. It cannot amplify the sound to the extreme. When not in use for an extended period of time, turn the amplifier to the off position;
4. Please do not increase the volume all at once. Please adjust the volume slowly to avoid damaging your ears. Please consult an otologist for use;
5. Store in a dry place with good ventilation, humidity not higher than 80% and no corrosive gas;