Feature: 1. The circuit adopts a constant temperature design circuit, which realizes the isolation between the heating sheet and the dried substance. 2. The drying process is carried out by the heat air in the box, without damaging the dried substance. 3. One button open design, which is very convenient for some groups to open and close the cover of the dryer. 4. Time design, using single chip microcomputer principle, accurate temperature control. 5. Press 4H or 8H to make the timer dryer work for 4 or 8 hours, meet different demands. Specification: Condition: 100% Brand New Item Type: Hearing Aids Dryer Material: ABS Scope of application: Specially designed for hearing aids and other precise electronic products in daily drying and dehumidification Method of use 1) Clean the water stains and stains on the surface of the hearing aid and other electronic products, open the battery compartment of the hearing aid to take out the battery, keep the battery compartment open, put it into the drying box, and cover the box 2) Plug the USB interface into the 5V output adapter and connect it to the mains, and the power indicator will be on 3) The timer dryer can work for 4 or 8 hours by pressing 4H or 8H Power Supply: DC5V 1A Rated Power: