1. When the temperature is lower than the set temperature, and is heated, the value display change according to the current temperature. 2. When the temperature reaches the set temperature, it stops heating, and enters the heat preservation state, and the display shows the set heat preservation temperature. 3.When the temperature is higher than the set temperature, the display shows the real-time monitoring temperature. 4.It is recommended to use this product in the environment of 0-40. Lower the environment temperature is, longer the heating-up time be. 5.The heating function at low temperature is limited by the power and cannot be achieved at present. Operations:1.Put the bottle into the insulation cover adjust the magic tape according to the size of the bottle, and connect the power supply. 2.After connecting the power supply, the power light is on and the connection is normal. The default temperature is 35 . 3.Long the + button to start the temperature adjustment, a total of 7 gears can be adjusted (35C, 40C, 45C, 50C, 55C, 60C, 65C) 4. After selecting the gear, the display jump to the current temperature and start working. 5. After the preset temperature is reached, the temperature display shows the preset temperature and enters the insulation mode. Kind tips: Heating of 200ml of water from 25 to 45 takes about 20 to 30 minutes. The heating time is long, it is recommended to heat in advance and keep it warm. The minimum diameter of the bottle shall not be less than 50mm, and the maximum diameter shall not be 80mm. Color: Blue Material: PU leather + polyester Package Contents: 1 x Baby Bottle Bag 1 x Data Cable 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.