Uses: hearing loss for patients with hearing loss compensationFunction: suitable for hearing lossMaterial: ABSNormal operating conditions:Ambient temperature 5 ? ~ 40 ?Relative humidity ? 80%Atmospheric pressure 86kPa ~ 106kPaPower supply voltage d.c.1.4V, with a relative error of +5%, -10%.Hearing aids appearance should be correct, color should be uniform, the surface should be no burr, flash, depression, scratches and other defects.The direction and direction of the volume adjustment should be expressed in words or quantities; the polarity of the battery should be marked accordingly.Hearing aids should be fully assembled parts, fixed and reliable, the adjustment button, the switch should be flexible and effective.
Trustpilot
1 week ago
1 day ago
