Features: 【Food-Graded Material】With food grade high borosilicate glass body. health. safe and high temperature resistant. 316 food grade stainless steel heating plate. safer and healthier. 【300ml Capacity】The portable water warmer has 300ml capacity. which can soak milk 3-4 times. Wireless fast heating. the baby water warmer is a good helper for mixing formula milk outdoors. 【With Temperature Display】The water temperature has LED screen to display temperature. practical and considerate; Supports 37℃ to 55℃ temperature adjusting for different baby formula 【Built-in Large Capacity Battery】Built-in 5200mAh large capacity battery. can keep constant temperature up to 8 hours; With type-c charging port and USB charging cable. the water warmer can charged by power bank. USB power adapter. laptop. car charger conveniently. 【Other Features】Bouncing cup cover design. one hand operation. easy to use; silicone anti-slip pad at the bottom for more stable placement; compact and lightweight. more convenient to carry during outdoor travel. Specifications: Color: White/ Pink/ Blue(optional) Material: Borosilicate Glass + Stainless Steel + ABS Capacity: 300ml Temperature Range: 37℃ to 55℃ Battery Capacity: 5200mAh Charging: 5V USB Item Size: 21 * 8.6cm/ 8.3 * 3.4in Item Weight: 580g/ 20.5oz Packing List: 1 * Water Warmer 1 * USB Cable