Product description Material: plastic Size: 88.4*61.1*23.9mm Colors: White, Black Battery: 1*CR2032 Measuring range: -2050 (-4~122) Package content: 1*electronic thermometer 1.Large LCD display and waterproof: You can read the measurement at a glance with an easy-to-read extra large LCD screen. Good helper for people who do not have the best vision. IPX3 waterproof waterproof structure can withstand the moisture of the cold room or freezer, making sure it works in a safe and consistent way. 2.Records Min & Max Temperature: It delivers historical temperature readings. With this function, you can easily monitor the temperature change of your fridge and protect your food safety twice as well. 3.Easy and intelligent operation: Easy to use thermometer with only 3 buttons. Simply press on or off button around the thermometer on/off. Press C / F button to select Celsius / Fahrenheit. Press CLR button to clear the max/min data record. When you restart the thermometer, the max/min data record is reset. 4.2 portable placement ways: You can either place the stand on the table top, or turn the stand over and use the hook to hang it on a cool shelf. Mini design will not take too much places in your fridge. 5.Temperature range and accuracy: The temperature range from -20~50(-4~122) with high accuracy (1/2). You can use it in the refrigerator, freezer or as a room thermometer for food safety or other applications.