Made of high quality plastic material non-toxic and odor-free safety to use. This digital hygrometer is perfect for indoor use in homes and also can be used for industrial applications and other occasion. Mini size is very easy to be carried It s portable for you. It can help you to check the indoor temperature and humidity effectively. It is a great gift for your home to provide you with better quality and healthier living environment. Color: orange black white green blue yellow Size: 45.2mm Material: plastic LCD display Rated Voltage: DC 1.5V Temperature Range: -50°c ~ 70°c Temperature Accuracy: ±1°C Humidity Measurement Range: 10% RH ~ 99% RH Humidity Display Resolution: 1% RH Humidity Accuracy: ±5% Powered By: 2pcs LR44 batteries(Include) There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. 1* Mini digital indoor round thermometer( Battery included)