This is a bottle warmer and milk warmer. Convenient for keeping drinks warm when you're on the go! For warming baby bottles and more! It has 3 temperature settings. Red: 60°C Blue: 50°C Green: 40°C *The temperature will automatically adjust from red to blue, then green after a certain amount of time. After that, it will continue to keep warm in low-temperature mode. The fluffy fabric inside provides excellent heat retention. Simple operation has been confirmed, so please purchase with confidence. ■Size: 14 x 12 cm ■Included: USB cable (Type C) ■Color: ① (See the last image) *No instruction manual.