Axon K-188 Digital Hearing Aid Sound Voice Amplifier

Axon K-188 Digital Hearing Aid Sound Voice Amplifier KEY FEATURES Excellent Value For Money High-Quality Product 3 steps to removing Whistle 1. Choose a suitable earplug to make the product sealed in the ear canal 2. Low down the sound volume 3. When you put it into the battery, please be quick, to put the product into the ear   Notice: Adjust the volume to the minimum before use. Choose a slightly larger size cap to avoid the whistler. Increase the volume gradually to avoid a sudden increase in sound. Keep the ear plug clean Remove the battery if you do not use it for a long time. Product Type: Hearing Aid sound amplifier Brand: Axon, Model: K-188 6 months service warranty Invisible High-quality hearing aid sound amplifier Super mini size and lightweight, not easy to be seen Adjust volume to adjust the sound as per your need 3 different sizes of Earplug included adjusting easily in your Ear Increase volume gradually to avoid a sudden increase in sound Now you can watch movies, enjoy drama, attend meetings, or have class, it could help you hear the sound clearly and loudly Max Sound Output: ≥110 dB ± 5dB, Max Sound Gain: ≥30 dB ± 5dB Frequency Range: 300～4000Hz, Input Noise: ≤40 dB Battery: A10 Button battery (included) Working Voltage: dc1.5V, Working Current: ≤3mA Authentic product