Features: 1. Made of high-quality microfiber PU material, which is and non-. 2. The packaging is convenient and firm, not easy to fall off. 3. Can be applied to a variety of materials, such as water cups, mineral water bottles, milk boxes and so on. 4. Support power bank charging , USB powered, car charging. 5. Intelligent temperature control design, convenient to use. 6. 24-hour insulation when plug in, four-layer to lock temperature. 7. The strap is portable and can be hung on the crib. 8. The hook&loop is soft and skin-friendly. 10. Foldable, convenient to store. Specification: Material: Microfiber PU + Heating film + USB Cable Optional Color: Size: Approx. 12.5 * 7.5 * 7.5cm / 4.9 * 4.9 * 3.0in Inner Diameter: 55-70mm / 2.2-2.8in Power: 5V~2A Frequency: 50Hz Power: 10W Weight: 300g / 10.6oz Red beard flash: below 40°C, the water temperature is not enough Green beard bright: 40~45°C, suitable for milking Red beard bright: 45 ° C or more should not suitable for milking Package list: 1 * Milk Heater Note: This product needs 5V 2A power supply ensures its normal use. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.