XON F-137 Earplug Digital Volume Hearing Aids Sound Amplifier Adjustable When you see film, watch the play, have meeting, or have classes, the product can help you to hear the sound clearly & loudly. While in forest, if you want to hear very slight sound, it will be a good choice.
Features: 1. Loud & Clear sound, cheap price. 2. Fashion design, comfortable to wear & easy to use. 3. Beautiful apperance, durable. 4. Ear volume control, N-H switch. 5. With “H” low frequency noise reduction 6.CE Approval Specification: Item No.: F-137 Max Sound Output: 1305d B Max Sound Gain: 48d B 5d B Harmonic Wave Distortion: ≤4% Frequency Range: 450~3500 Hz Input Noise: ≤30d B Battery: AG5 or A13 (Zinc air) Working Voltage: D.C.1.5V Working Current: 3m A Measurement: 46*38*9mm Weight: About 92g NOTE: If you hear the whistling sound, please check that whether you plug in the ear plug tightly. If it can't be plug tightly, please change the other size plug. 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, & high temperature. Package Included: 1 x F-137 Hearing Aid 2 x Battery 4 x Earplug 2 x Earplug Connector 1 x User's Manual