Thank you for purchasing our portable heating kit. We offer 1 year warranty for it. This heating kit is pretty well-made simple and practical design. Meanwhile,we will provide a nice box to keep it in. Temperature control setting: Hold the home button down for 1.5 seconds to change temperature setting. The Burner comes equipped with a built in memory function, it will automatically heat to recent heating temperature selected Turning on/off : Lock /unlock the heating kit by pressing 1.5 seconds quickly. It is engineered with an automatic shut-off system to prevent overuse. 5 minute after powering on ,the device will automatically shut-off.