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". N.W.: 1.42lb 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.