【WIDE VOLTAGE AND SAFE】 Puidselly milk warmer adapts to 5V output power for 10W long-term heat preservation effect,and also adapts to 9V voltage output power for 18W to improve heating efficiency, effectively responding to different usage scenarios. This portable baby bottle warmer is made of PU material, safe and insulated. 【6 LEVEL TEMPERATURE SETTINGS】The Portable Bottle Warmer has six temperature settings: 40°C, 42°C, 44°C, 46°C, 48°C, 50°C (104°F, 107.6°F, 111.2°F, 114.8°F, 118.4°F, 122°F), Set different temperature according to actual needs. With LCD display to show temperature.(Recommended to use only warm water to keep warm, not for direct heating of cold water or cold milk) 【KEEP WARM FOR 24 HOURS】Bottle warmer for breastmilk can keep the bottle warm for up to 24 hours, feeding your baby anytime, suitable for most bottles and baby food containers.Special note: remember to use 2A quick charging adapter or charging bank,otherwise the heating will be slow. 【MULTIPLE APPLICATION SCENARIOS】Outdoor baby bottle warmer is suitable for travel, in train, plane, or car, indoor or outdoor. Convenient, safe, and easy to keep baby bottle warm. 【EASY TO CLEAN】The portable bottle warmer for travel is made of PU material, you can easily clean the bottle warmer with a wet tissue.PULLSER