Feature: 1. Wireless Charging: The milk warmer is designed with wireless charging, easy to carry; USB port, you can heat the bottle when you are on the go, offering convenience and portability for busy parents on the go. 2. Maintain Constant Temperature: The thermal sleeve can effectively maintain constant temperature and protect the quality of milk in the bottle. This design provides peace of mind for parents. 3. Night Time Auto Heating Function: The portable milk warmer is equipped with night time automatic heating function, which is convenient for breastfeeding at night; it is suitable for all kinds of powdered milk. 4. Easy to Use: The milk warmer is easy to use and convenient to operate, suitable for new parents.With straightforward operating and intuitive controls, this device streamlines the process of preparing warm milk for your baby. 5. Milk Warmer: Portable bottle warmer can be used as a universal milk warmer to provide warm milk for your baby. Milk Warmer provides a practical solution for providing warm milk for your baby wherever you go. Specification: Item Type: Bottle Warmer Material: Plastic Size: Approx. 87x55x145mm / 3.43x2.17x5.71in Battery Type: Battery x2 (Shipped with Built in Battery) Single Battery Capacity: 3000mah. Package List: 1 x Milk Warmer 1 x USB Cable 1 x User Manual