NSC For Old Age With 2 Extra Wires Sound Enhancement Wired Box F-18 In the Ear Hearing Aid(Blue,white)

Brand : NSCModel Number : F-18 Color : White & Water green AXON, a professional factory in making hearing aid for 9 years. Model F-18 is a promotion pocket hearing aid, It is powerful and stable. With the appropriate size and shape, easy operate and comfortable for use, it's a good choice for the old people with heavy hearing loss. Specification : Model : F-18 Pocket Hearing Aid Max Sound Output : 129dB ?? 4dB Max Sound Gain : 55dB ?? 5dB Total Harmonic Distortion : ?5% Frequency Range : 450~3500 hz Equiv Input Noise : ?30 dB Battery : 5# dry battery Working Voltage D. C. 1.5V Working Current : ?4 mA Measurement : 6.8*4.5*2.0cm Package Included : 1 x Hearing aid amplifier 3 x Earplug (different size) 1 x User manual 1 x Battery 1 x Original case