Adopting sturdy plastic material, this plastic thermometer as well as hygrometer can serve you for a long term. The large digital display allows you to see , you can easily know the indoor temperature and humid level, have accurate result. Light weight, small size, easy to use, suitable for using at home, in the car, etc. Features -Color:Black -Material:Plastic -Size:4.80X2.80X1.60cm/1.89X1.10X0.63in -Temperature Range: -50°c ~ 70°c -Measuring Humidity Range: 10% RH ~ RH -Battery: 2 x 1.5V LR44 button battery -Power dissipation: 5 milliwatts in working condition -Humidity Display Resolution: 1% RH -Temperature test accuracy: ±1.0 degree centigrade -Humidity test accuracy: ±5%(Room temperature 25 degree centigrade) - Accurate measurement: High-precision sensor of the thermometer and hygrometer has accurate temperature and humidity measurement. - Easy to read: Large screen with clear and easy-to-read display, the small thermometer offers you great convenience. - Portable to take: Light weight, thermometer is in mini size, take up little space, can bring you satisfying using feeling. - Practical functions: The test result is accurate, this temperature thermometer is very practical and can function very well. - Wide occasions applicable: Portable thermometer is suitable for factory, home, bathroom, bedroom and many other scenarios. Package list: 20 x Hygrometer Thermometers