1.Bigger screen, Better reading : This has 2.56 inch electronic LCD display, the information on the screen can tell us the max, min and the current temperature at the same time. Powered by 3 Volt Model CR232 Lithium Battery(Included). You can learn the accurate temperature info of your freezer room all the time 2.Simple Operation: Simple electronic thermometer with only 3 buttons (at the back) . Just press the on or off button to switch the thermometer on/ off. Press C/ F button to select centigrade or fahrenheit. Once you reboot the thermometer, the max/ min temperature will be reset 3.Widely Temperature Meauring Range: Accuracy 2F. Resolution: .2F. The temperature can range from -4F to 122F and it is accurate. Allowing you to use this in the fridge, freezer. it can act the role of general thermometer for indoor or outdoor 4.Portable Ways: You have 3 different choices for placing this indoor thermometer. Either use the stand to place it on the table-top, flip the stand over and use the hook to hang it on a refrigerator shelf, or adsorption to the adsorbable material using a magnetic back. Mini design and won't take too much places of your fridge 5.IPX3 Waterproof: Waterproof structure (waterproof level IPX3) can resist the damp of the refrigerator or freezer room, make sure it is working in a safe and consistent manner