Specification:<br /><br />100% brand new and high quality<br /><br /><br />Material: Plastic<br /><br /><br />Color: As the picture shows<br /><br /><br />Max sound output: ≥120 dB<br /><br /><br />Sound gain: ≥30dB<br /><br /><br />Total harmonic wave distortion: ≤10%<br /><br /><br />Frequency range: 250-3500Hz<br /><br /><br />Input noise: ≤40dB<br /><br /><br />Voltage: DC1.5V<br /><br /><br />Current: ≤4mA<br /><br /><br /><br />Features:<br /><br />Hearing aid sound amplifier<br /><br /><br />Super mini size and light weight， not easily to be seen<br /><br /><br />Adjust volume to the minimum before wearing<br /><br /><br />Increase volume gradually to avoid sudden increase in sound<br /><br /><br />Convenient for watching movie， enjoying the drama， attending meeting， or having class， <br /><br />it could help you hear the sound clearly and loudly<br /><br /><br /><br />Package Included:<br /><br />1x Hearing Aid<br /><br /><br />2x AG3 Button Cells<br /><br /><br />1x Instruction Manual<br /><br /><br />1x Case<br /><br /><br />4x Units of earplug of different size<br /><br /><br /><br />Note:<br /><br />Due to the hand measurement， there have size error about 1-3cm<br /><br /><br />Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same<br /><br /><br /><br />