Portable Wireless Baby Bottle Warmer Travel Milk Heater Warmer for Breastmilk Formula Thermal Bag for Baby Feeding Bottle Built-in Battery with USB Charging Cable Features: Warms Baby Milk to Perfect Temperature: When the power is turned on, baby bottle warmer can directly heat the milk and keep the temperature at about 42℃, so that the baby can drink warm milk at any time. Built-in Rechargeable Battery: Built-in 5200mAh large capacity, about 3H working time after fully charged, and can be charged by 5V 2A car charger, power bank, power adapter, etc. supports working while charging. Premium Material: Made of ABS + microfiber PU + aluminum foil coating + PE foam + heating film + soft fabric, safe and durable, has wrinkle resistance, shape retention and higher strength performance. Suitable for Most Baby Bottles: Wrap-around type design, can be adjusted via the fastener, which make it suitable for most baby milk bottles, very convenient e. Easy to Carry: Compact and lightweight, easy to carry while go shopping, have a picnic or go to travel with baby. A good helper for new Mom and Dad in cold winter. Specifications: Battery Capacity: 5200mAh Voltage: 5V Current: 2A Charging: USB Item Size: 5.5 * 14.5 * 8.7cm/ 2.2 * 5.7 * 3.4in Item Weight: 225g/ 7.9oz Packing List: 1 * Bottle Warmer 1 * USB Cable(1M) 1 * Users Manual