Safe Food Grade Protective】: food-grade silicone and stainless steel contribute to consistent heating performance and superior durability of this small travel kettle.【Ultra-thin Design】: Folded size: 6.5"X6.3"x2.1"; Unfolded size: 6.5"x6.3"x5.1".【One Button Design】: Super easy to operate, just press the button, then water will be boiled in 3-5 minutes, Once the temperature below 75 degree, water will be self-heated.【Dual Voltage Optional】: 110V/220V dual voltage can be use all over the world, you can change it at the bottom of the kettle. Please adjust Voltage to 110V before use in US.