Made of food grade ABS material, green and healthy. Perfect material to have direct touch with food. Fine waterproof performance, do not affected by moisture easily. Small in size, easy to carry, do not take much space. Fast response and stable performance. High accuracy, rapid temperature measurement.  Feature - Color: As shown. - Material: Plastic. - Size: 6.7 x 6.2 x 1.2cm. - Temperature measurement range: - 10 degree centigrade ~ 60 degree centigrade - Measurement error: +1 degree centigrade. - Working Principle: Resistance Temperature Measurement. - Resolution: 0.1 degree centigrade (0.2 fahrenheit scale). - The thermometer is used to record temperature, help to adjust to the suitable temperature for food storing.  - Accurate record, stable and reliable. Clear digital screen, easy for you to read the temperature.  - Hook design, can also be used as a bracket, easy to install without tools.  - Can be used in the fridge.  - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 4 x Thermometer