Feature Small and easy to carry. With this heating bag, your baby can drink warm milk at any time and keep warm at st. (Insulation requires connection of USB to the power supply) It can be used when connected to mobile power, charging head and sacar USB. Adjustable Velcro fastener, suitable for different bottles (diameter: 55-80mm) Specifications Product Name: Intelligent Insulating Milk Bottle Cover Suitable productionty: baby bottles, glass kubki Product size: approximately 29*13 cm (11.4"*5.1") Product material: PU leather heating foil lining Cechy of the product: 3 levels of temperature control, continuous heating with st constant temperature Power Input: 5V2A 50 HZ Weight ofpako: about 0,1 kg Volume ofpako: approximately 11,5*3*17 cm 3 colored reminder lights, easy to control milk temperature Switching function: Yellow light of the power button (battery) thermostatu jest zawsze enabled. Long press 3 S to turn on blue light, average range 70% output power 55 stopni. Press again and the red light will light up, high-end 100% output power is 65 stopni. Press again and the green light will light up and the low 40% level will output 45 stopni. Lista packages 1 * Baby Bottle Warmer 1 * Data Cable