Features: •100% brand new sound amplifier behind the ear •Super mini size and light weight,not easily to be seen •Adjust volume to the minimum before wearing •Choose an earplug of slightly bigger size to avoid whistler •Increase volume gradually to avoid sudden increase in sound Specifications: -100% Brand new and high quality -Name:Hearing Device -Material:ABS+silicone -Product Type：Rechargeable TWS Analog -Peak OSPL 90(dB SPL):117dB -HAF OSPL 90(dB SPL):110dB -Peak Gain(dB):32dB -HAF/FOG Gain(dB):29dB -Frequency range(Hz):300-3500Hz -Distortion: 500Hz:3% 800Hz:3% .
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