4. Adjustable fastener, suitable for a variety of bottles (diameter: 55-80mm)
2. With this heating bag, babies can drink warm milk at any time and stay warm at a constant temperature. (Insulation requirement: USB connection to power supply)
3. It can be used by connecting to mobile power, charging head, and car USB.
Specification: Product name: Smart insulation milk bottle coverApplicable products: baby bottles, glass cupsProduct size: about 29*13cm (11.4*5.1)Product material: PU leather + heating film + liningProduct features: 3 levels of temperature adjustment, continuous constant temperature heatingPower input: 5V2A
