Features: Customizable Warmth: The portable milk warmer features an adjustable heating temperature range of 38-55°C (100-131°F), ensuring your baby's milk is at the perfect temperature every time. On-the-Go Convenience: Designed with a USB interface, this portable milk warmer can be connected to power banks, car chargers, or a plug, providing warmth on demand, anytime, anywhere. Designed for Peace of Mind: This USB baby bottle warmer is crafted from premium materials, including thick, waterproof fiber cloth and electronic components, ensuring both warmth and safety. Save Time, Worry Less: With this bottle warmer, you can save time and enjoy every moment with your baby. No more waiting—just warmth, comfort, and smiles. Widely Used: This baby bottle warmer bag is a great gift for new mothers. It's suitable for shopping, travel, picnics, and other outings with your child. You can heat milk anytime and anywhere your child needs it. Notice: 1. Actual color may slightly differ from the image due to different lighting effects. 2. Please allow a 1-3cm deviation due to manual measurement. Description: Material: Waterproof fiber cloth, composite heating sheet Size: As shown in the picture Bottle diameter: Approximately 8cm Instructions for Use: 1. Connect the product to the connecting line, then to the power supply. 2. Press and hold the power button for 3 seconds to turn on the device. The default setting is the highest temperature (55°C). It will automatically switch to 50°C after 30 minutes, then to 46°C after another 30 minutes, then to 42°C after 30 minutes, and finally to 38°C after 30 minutes, maintaining a constant temperature of 38°C until turned off. 3. You can manually change the temperature setting. Press the power button once to change the gear. 4. Press and hold to shut down. Package List: 1x Bottle Warmer