Smart Design: Quartz precision and waterproof material make it very convenient for you to use. Lightweight and small, it won't take up much space in your refrigerator. Large numbers, great for people with poor eyesight. You can easily read the display by the large, bold numbers.Easy to operate: No complicated controls, it is the simplest electronic thermometer with only two buttons. Press the On/Off button to turn on the thermometer, then select Degrees or Fahrenheit.Measuring range: -20~50Measurement error: 1Refresh rate: 10SWorking principle: Thermistor converts temperature displayBattery model: CR2032 button battery *1PCS (included)Wide range of applications: the perfect thermometer for refrigerators, freezers or regular room temperature meters. It is suitable for different occasions such as home, restaurant, bar, cafe. It is also a great gift for family or friends.