Fast Constant Temperature HeatingHeating for 15-20 minutes, the temperature can be heated from normal to 40C, keeping the temperature constant. You don't need to worry about the water in the heater becoming dry, and you can feed your baby. Real-time Temperature DisplayThe electronic screen displays the heating temperature in real time, and the temperature can be read quickly and conveniently in the dark or at night. Easy to UseWarmer and easier to operate, just plug in the car's ciga-rette lighter or USB, about 55cm/21.65 inch cable, you can move the hot milk in the car. Outdoor PortableLarge capacity that can hold two bottles or straw cups. When heating is not needed, you can carry a milk warmer with you or hang it on the handlebar of the stroller. Ideal for TravelThe small size makes it easy to store in the car and easy to carry. So this car bottle warmer is very suitable for feeding on the go, the baby will not cry anymore. Specification: Name:USBSmartTemperatureRegulatingFoodHeatingBag Supplyvoltage:5V Accessories:USBchargingcable*instructionmanual Capacity:6.8L Powersupplyinterface:USB*TYPE-Cinterface Outputpower:20W Size:about26CM*16CM*16.5CM/10.24*6.30*6.49in Packing:PEbag PackingList: USBSmartTemperatureRegulatingFoodHeatingBag*1 Note: Duetothelightingeffectsandshootingangles,thereiscolordifferenceintheproduct,pleaseunderstand. Duetomanualmeasurement,thereisatoleranceintheproductsize.