Features: Adjustable Warmth: Our portable milk warmer features an adjustable thermostat with warming temperatures ranging from 38-55°C/100-131°F, ensuring your baby's milk is always at the perfect temperature. Convenience on the Go: Designed with a safe USB interface, our portable milk warmer connects to a power bank, car charger, or wall outlet – providing warmth on demand, anytime, anywhere. Designed for Peace of Mind: Made with premium materials, including thick waterproof fiber fabric and electronic components, our USB bottle warmer guarantees both warmth and safety. Save Time, Worry Less: Save time and cherish every moment with your little one. No more waiting – just warmth, comfort, and smiles. Widely Used: This bottle warmer makes a great gift for new moms. Perfect for shopping, travel, picnics, and wherever you take your baby. Warm milk anytime, anywhere, as long as your little one needs it. Note: 1. Actual color may slightly differ from the image due to different lighting effects. 2. Please allow 1-3cm deviation due to manual measurement. Material: Waterproof fiber fabric, composite heating plate Size: As the picture shows Bottle Diameter: Approx. 8cm Instructions: 1. Connect the product to the connecting cable and then to the power supply. 2. Press and hold the power button for 3 seconds to turn on the power. The default setting is the highest level, 55°. It automatically switches to level 2, 50° after 30 minutes, then level 3, 46° after 30 minutes, then level 4, 42° after 30 minutes, then level 5, 38° after 30 minutes, and then maintains a constant temperature of 38° and does not turn off. 3. You can freely change the mode manually. Press the power button once to change the mode. 4. Press and hold to turn off. Package List: 1x Bottle Warmer