Bluetooth Designed HD Hearing Aid Wireless Sound Amplifier Enhancer

Features: 1. Bluetooth style hearing amplifier. 2. Discreet, Lightweight and powerful. 3. Adjustable volume. 4. Can be used in any place: Home, work and meetings etc. 5. Comes with 3 soft ear plug. Description: Item Type: Hearing Aid Material: PVC Colour: Black Type: Wireless Max Sound Output: 130dB ± 5 dB Sound Gain: 45dB ± 5 dB Total Harmonic Wave distortion(10%): = 10 Frequency: 450-3800 Hz Input noise: =30dB Working voltage: 1.5 V Working current: 10.8 mA Battery Type: AG13 lithium coin battery(included) Package Included: 1 X Hearing Aid 3 X Ear tips 1 X English Instructions 4 X AG13/ A675 Batteries NOTE: If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. Use for long periods of time, please remove the batteries to prevent battery rot erosion hearing aid components. Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids. Avoid shock, drop, moisture, and high temperature.