describe:1. Accurate and fast heating: The portable milk warmer uses an imported temperature sensor chip to provide accurate heating. When using the 5V 2A adapter, it only takes about 20 minutes to heat 150ml water from 30 to 40.2. Temperature adjustment: This milk warmer has an LCD screen that can monitor the temperature in real time. You can adjust it freely between 38 and 55.3. USB port: This bottle warmer is designed with a USB port, suitable for a variety of power supply modes, lightweight and safe.4. Wide range of uses: The bottle warmer is suitable for various occasions and can be used in travel, airplanes and cars to make our lives more comfortable.5. Reliable Material: The portable milk warmer is made of high-quality materials, waterproof and can be cleaned with paper towels or other towels. Includes heating element. Do not wash directly with water.Specification:Product type: USB baby bottle warmerMaterial: waterproof fiber cloth, composite heating padInput power: 5V 2ABottle diameter: approx. 8 cm (3.1 inches)Dimensions: approx. 8x14cm (3.1x5.5in)Heating method: Even heating aroundShape: straightpacking list:1 x USB baby bottle warmer1 x USB data cableNotice:Please note that different power supplies have different heating times.