Features: Food-Graded MaterialWith food grade high borosilicate glass body, health, safe and high temperature resistant. The glass body is detachable, convenient to remove and wash without dead corners. 316 food grade stainless steel heating plate, safer and healthier. 300ml CapacityThe portable water warmer has 300ml capacity, which can soak milk 3-4 times. 3 minutes wireless fast heating, the baby water warmer is a good helper for mixing formula milk outdoors. With Temperature DisplayThe water temperature will be display on the water warmer body, practical and considerate; the supports one button switching common temperature of 45/ 55 for quick milk mixing. Built-in Large Capacity BatteryBuilt-in 15000mAh large capacity battery, can keep constant temperature up to 12 hours; Supports QC3.0 fast charging and only takes 3 hours to be fully charged, shorter charging time. Other FeaturesGlass cup with plastic coat, safe against scalding and falling; window visual water level scale, convenient quantitative milk mixing; bouncing cup cover design, one hand operation, easy to use; silicone handle for convenient carrying; silicone anti-slip ring at the bottom for more stable placement; ergonomic silicone keys for more comfortable operation. Specifications: Color: White/ Pink/ Blue(optional) Material: Borosilicate Glass + Stainless Steel + Silicone + Plastic Capacity: 300ml Temperature Range: 37 to 55 Battery Capacity: 15000mAh Charging: 5V USB Item Size: 23.5 * 8cm/ 9.3 * 3.1in Item Weight: 682g/ 24oz Packing List: 1 * Water Warmer 1 * USB Cable