AXON C-109 Mini Rechargeable BTE Hearing Aid Voice Amplifier Volume Control - EU Plug •Low noise and low distortion •BTE (behind the ear) design,comfortable to use •Help you to get a more clear sound and a better hearing •N-H switch: N for normal work mode; H for reducing low frequency noise •Volume adjustable,with 4 kinds of volume modes •Built-in rechargeable high capacity lithium battery •Suitable for people with severe hearing loss •Come with 5 earplugs in different sizes Specification: •Max Sound Output: 130dB±5dB •Sound Gain: 38dB±5dB •Total Harmonic Wave Distortion: ≤5% •Frequency Range: 300-4000Hz •Input Noise: ≤30dB •Working Voltage: DC 3.7V •Input: 100-240V,50/60Hz,150mA •Output: 5V/500mA •Color: Beige •Size: 5cm x 5cm x 1.6cm •Weight: 9g Package included: •1 x AXON C-109 Mini Rechargeable BTE Hearing Aid Headphone Amplifier •5 x Earplugs •1 x Charger •1 x Carrying Case •1 x User Manual