Lifetime Support Service - If you have any problems when using our hearing aids, please to contact us. We provide Lifetime Support Service.
Why There Are Some Background Noise? -Actually, it is the electric current sound existing in all good machines. Generally, the higher the power, the greater the static sound. Turning on after put it in ears, then turn up the sound gradually. Generally, You will get used to it after 2-3 weeks.
Why Does Whistling Occur? -The whistling is due to the gap between the earplug and the ear canal, which does not fit the ear completely. It is recommended that you replace the earplug with a more suitable one, so that the whistling will disappear when it fits perfectly.
