A built-in rechargeable battery is built into this sterilizer circuit, so you can use 2~3 won with a single charge using a smartphone charger. It's free to move at any time, so you can store mugs, toothbrushes, razors, cell phones, baby bottles, cell phones, etc. in various convenient disinfection at home, office, or outdoor camping sites. In particular, recently expensiv ...View more