For your health and safety, the power may automatically turn off every 2 hours during use. Please note that this is not a malfunction. Berussia Foot Warmer 40 cm x 40 cm It comes with a removable controller and is machine washable. Lightweight and portable, this hot pad can soothe your daily muscles whether you're traveling, in the office, or at home. * Although it is 《brand new and unused》, it has been opened, so it is listed as 《like new》. * Operation has not been confirmed. 0504