Product Name: Apix Double-Sided Carbon Heater Thank you for viewing. This is a heater I was using at home. I purchased it in November 2020 at Yamada Denki. By turning the rotary switch on the top, you can adjust the heater to both sides (front and back), front (one side), or back (one side). It works without any particular problems, and I think I used it carefully. *Please note that the purchase date is written on the cover of the instruction manual. Please refrain from purchasing if you are concerned about minor details, as it has been stored at home. - Brand: APIX INTL - Type: Double-Sided Carbon Heater - Color: White - Accessories: Box, Instruction Manual