Axon F-18 Sound Enhancement Pocket Amplifier Hearing Aid Machine

Axon F-18 Sound Enhancement Pocket Amplifier Hearing Aid Machine Operation Open the battery cover; insert the AAA battery to the hearing aid in the correct direction. Connect “L” plug to the earphone socket, then put the earplug on the earphone. Push the earplug deeper into your ear. Switch your hearing aid on and adjust the volume to get a clear sound. Put the hearing aid in the pocket or clip it on your clothes. (Note: Make sure the unit is on “0” position and volume is on “I”, otherwise the instant sound will make you uncomfortable). Switch O-N-H “O” – means “Power Off” “N” means -“Power On” “H” means reducing noise in low frequency  (Note: This function is better to use in noisy places).     Specifications: Pocket Hearing aid Max Sound Output: 129±4 dB Max Sound Gain: 55dB ± 5dB Harmonic Wave Distortion: ≤5% Frequency Range: 450~3500 hz Input Noise: ≤30 dB Battery: 1 x AA battery (included) Working Voltage: dc1.5V Working Current: ≤4mA Color: As the picture shows Item Size: 6.8 x 4.5 x 2.0cm Package Size: 12 x 8.5 x 3.3cm Net Weight: 28g Package included: 1 x F-18 Hearing aid 4 x Earplug (different sizes) 1 x AA battery 1 x User manual 1 x Box