eature: 1, CE Approval 2. Bluetooth style 3. Adjustable ear hook 4. ON/OFF Switch 5. Volume Control 6. Max sound gain 55d B 7. 3 different size noise prevention earplug 8. Ajustable ear hook, you can use the way both with ear hook & without. It’s better to install the ear hook if go outside or doing some intense exercise sport, the ear hook can better secure the hearing aid firmly close ear, in order to avoid the hearing aid drop down in the process of using. 9. This hearing aid is packaged in a nice retail box which is perfect for retailling. Model: V-183 Max sound output: 1305d B Max Sound Gain:: ≥50d B Total harmonic wave distortion: ≤5% Frequency Range: 300~4000 Hz Input Noise: ≤30d B Current: ≤4 m A Voltage: D.C.1.5V Battery: 2 AG13 Button Battery Box
Size: 10 x 8 x 3.5 cm Package Weight: About 75g Package Include: 1 x V-183 Hearing Aid 3 x Earplugs (Different Size) 2 x Ear Hook 2 x AG13 Button Battery 1 x Case 1 x English Manual NOTE: 1, If you hear the whistling sound, please make sure if you put the earplug tightly, or if you use a appropriate size earplug. 2, Please take out the battery or turn off the hearing aid when you stop to use it. 3, This product is not waterproof. 4, If water enter the sound amplifier, remove the battery & place the sound amplifier in a warm place to dry. 5, Sound Amplifier is not a hearing aid for those with impaired hearing. If you have impaired hearing, please consult your doctor.