Description: Material: PU, heat-insulated cotton Size: 90 mm, 120 mm Compatible baby bottles: Suitable for baby bottles with a diameter of 6.5-7 cm Color: Bright yellow, bright green Quantity: 1 piece Package includes: 1* vacuum bottle lid 1* USB charging cable 42°C constant temperature: This portable baby bottle warmer is made of heat-resistant materials and has safe insulation. 42°C constant temperature heating, effectively preserving the warmth of nutrient-rich milk. The warmer keeps the bottle warm and prevents it from cooling down, allowing the baby to drink milk while it's being heated. Faster heating?: The baby milk warmer uses an imported temperature sensor chip for precise heating. With 9V, 10V adapters, it takes about 20 minutes to quickly heat 200 ml of water from 25℃ to 40℃. With a 5V, 2A adapter, it has a heating retention or slow heating effect and can intelligently maintain a constant temperature. (It takes 40 minutes to heat frozen milk to 42°C with a 5V 2A adapter.) Suitable for different materials: The portable travel bottle warmer is suitable for heating various materials, including plastic, glass, or stainless steel. During the heating process, the surface of the portable baby bottle warmer does not heat up, and the temperature automatically switches to insulation mode when reaching 42°C, supporting 24-hour continuous insulation. Application scenario?: The breast milk bottle warmer is suitable for many occasions. It can be used as a bottle warmer for travel, airplanes, trains, and cars, making our lives more convenient and eliminating concerns about drinking baby milk.