42C constant temperature This portable baby bottle warmer is made of heat-resistant materials and features safe insulation. It provides 24-hour continuous temperature maintenance at 42°C through circulating constant temperature heating, effectively preserving the nutritional quality of milk. The device helps maintain the ideal bottle temperature and prevents milk from cooling, allowing the baby to drink comfortably. Faster heating The baby milk warmer uses an imported temperature sensing chip for accurate heating control. When using a 9V or 10V adapter, it heats 200ml of water from 25°C to 40°C in approximately 20 minutes. When using a 5V, 2A adapter, the unit operates in heat preservation or slow heating mode, intelligently maintaining a constant temperature. (With a 5V, 2A adapter, it takes about 40 minutes to warm frozen milk to 42°C.) Suitable for different materials This portable travel bottle warmer supports heating bottles made of plastic, glass, and stainless steel. During operation, the exterior remains cool to the touch. Once the temperature reaches 42°C, the device automatically switches to insulation mode. Use scenarios Ideal for various settings, this breast milk bottle warmer can be used during travel, on airplanes, trains, and in cars, offering convenience for parents on the go. Easy cleaning The bottle warmer is constructed with PU material and is not waterproof. Clean the surface with a dry or damp cloth or paper towel. Do not immerse the unit in water or rinse under running water.