Feature: 1. Portable USB Convenience: Bottle warmer features USB portability, allowing you to easily warm your baby's milk anytime and anywhere. Its compact design is ideal for on the go feeding. 2. LED Temperature Display: The bottle warmer bag comes equipped with a 21 setting temperature LED display, which clearly indicates the temperature of the milk inside the bottle. This feature helps prevent your baby from consuming either too hot or too cold milk. 3. Essential for Outings: This milk bottle insulation sleeve is a must have for any outing with your baby. It can be conveniently attached to your stroller, allowing you to easily take it along without any worries. 4. Constant Temperature Maintenance: With a built in constant temperature design, this thermostat bottle warmer cover effectively maintains the temperature of the milk in the bottle. 5. Multifunctional Design: Beyond its primary function, this bottle warmer has a versatile design that allows it to hold baby bottles with excellent insulation properties, providing both warmth and convenience. Specification: Item Type: Bottle Warmer Bag Material: Polyester+Silicone+Metal Size: Approx. 14x22cm / 5.51x8.66in Rated Power: 6W. Package List: 1 x Bottle Warmer Bag 1 x Data Cable 1 x User Manual