Specifications Usb safe power supply, automatic power off protection: cukol cup warmer overheat protection, built-in thermostatic circuit,even if you forget to shut it down, you dont need to worry about it automatically power off, fit for any device with usb port 55c constant temperature throughout the day, all-round surface heating: healthy heat source, pi heating method, high thermal conductivity, you can enjoy your drink at its best temperature all day long. Smart touch, 3 level of temperature adjustment: it can be set to 70c/90c/110c respectively. click the power switch continuously to set the heating temperature and issue a di sound, can be set different temperature Smart reminder to drink water: touch to turn on, remind once every hour Available for multiple container: it is perfect for glass cup,stainless steel cup, ceramic cup etc. it serves to conveniently warm cups of hot drinks such as soup, tea, coffee, hot cocoa. This product does not come with a cup Without other accessories(cup not included)