high quality Patented Design - Large enough for daily operation. With the beige surface on the device, you can wear it completely in the ear without being conspicuous. Magnetic recharging case prevents the devices from losing.Service Unlimited customer service every 24*7 hour by real-human phone or email, 1 year replacement.Rechargeable with Larger Capacity The compact charging box provides 250hrs backup power for every 2 hours charging. You can use it for 1 weeks with no need to recharge again.Easy Operation No complicated modes and buttons. Auto turn ON/OFF while in/out of the charging box. Adjust sound volume by finger without tools. No need to tell Left/Right. Super easy for seinors.Great Hearing Experience With intelligent noise reduction chip provides natural sound, Autiphon U01 hearing aid is a great choice to mild to moderate-severe hearing loss. The whistling -proof dome makes it not whistle at any volume. Higher sound gain than most other hearing aids.