When it gets cold, warm milk soon cools down, the heating bag can keep warm for a long time, allows you to quickly heat up the milk needed for feeding without losing its nutritional value. Constant temperature heating : efficient maintenance of nutritious milk, you can drink milk while heating it, Can be used while charging Power lamp, turn on the power button, the power light turns on and goes into heating This product has a temperature control function that adjusts the temperature and is the latest generation. The distinguishing feature of the heater is not only the wide functionality of the product, but also a very attractive design that will successfully fit into the fashionable interior design. The size of the device also makes it easy to pack it in a bag so that it is always at hand. Specification: Input voltage: 5 V 2A Battery: 6000 mAh Charging time: 4,5 hours White Weight: 228g Size (dxsxw): 55x145x87mm Package includes: 1x charging cable USB