Three illuminated temperature settings give you convenient heat adjustments Temperature monitoring with switch-off features keeps you safe Automatic switch-off function turns off the device after 110 minutes to prevent overheating Lithium-ion battery gives about 2 hours of runtime before needing a charge Included power bank and charging cable lets you charge your smartphone or other devices at the same time Machine-washable at 30 degrees Celsius, so it's easy to clean and maintain