Product Name: Hearing Aids/Sound Amplifier/High Power Digital Hearing Aids/Hearing Aids in Ear Model NO.: YX-HZJHDZ-003 Max Sound Output: 130+-5db: Working Voltage: D. C. 1.5V Trademark: SURECARE Transport Package: Single Pack Specification: CE Origin: China Product Description SpecificationsMain products- Hearing aids/Hearing amplifier/sound amplifier1)Cheap price2)Greater design3)OEM available4)Good quality5)Comfortable sound6)Easy to operate7)Adjustable volume control8)Low noiceFeatures:Comfortable soundLow noiseAjustable volume controlComfortable wearing in either earEasy operationLight weightSmall gift box packingSpecificaiton:Max Sound Output: 130+-5dBSound Gain: >=40dBTotal Harmonic Wave distortion: <= 5%Frequency: 300-4000 HzInput noise: <= 30dBWorking voltage: D. C. 1.5VWorking Current: <=6mABattery size: AG5Max Sound Output: 130+-5dBBattery size: AG5Sound Gain: >=40dBWorking Current: <=6mATotal Harmonic Wave distortion: <= 5%Frequency: 300-4000 HzInput noise: <= 30dBWorking voltage: D. C. 1.5V