I have kept this electric warming tray at home without using it. I have confirmed that it powers on (see image 2). It works when plugged in. It's a simple-to-use item. Instruction manual included. It can be used as a wall-mounted picture frame, or placed on a table. Outer box included. I am selling three of the same item, and I think this one is in the best condition. Manufacturer: Dia Mahobin Kogyo Co., Ltd. (Currently Orgo Co., Ltd.) Size: Overall 22cm x 22cm Warming surface 15cm x 15cm Power cord 1.9m ☆I am also selling other warming trays (*^_^*) *Please purchase only if you understand that this item has been stored at home. *Feel free to ask any questions in the comments. *Please check the photos carefully before purchasing. *Please understand that this is a personal inspection. The shipping method may be changed from Rakuraku Mercari to Yu-Yu Mercari. Thank you for your understanding. #WarmingTray #WarmingPlate #Pot #FoodWarmer