"Yamazen YAS-S421 Foot Warmer" Yamazen Model Number: YAS-S421 Power Supply: 100V 20W Made in 2019 This is a reliable foot warmer from Yamazen. It's useful for use at the feet in the office or while working at home. It's convenient because you can adjust the warmth with two settings: low and high. Operation has been confirmed. The instruction manual and box are not included; only the main unit is for sale. No pets, no smoking. After purchasing, I used it a few times and then stored it in a closet due to moving. I remember buying it at a local electronics store for about 10,000 yen (currently, it seems to be sold on Rakuten for 9,500 yen). The cover can be removed and washed.