Our Hygrometer Thermometer is made of ABS and electronic components materials which can be used for a long time. The product is small and lightweight, can easily place this indoor temperature gauge anywhere that you want. Features -Color:Black -Material:ABS and electronic components -Size:6.50X6.50X2.80cm/2.55X2.55X1.10in -Voltage: 4.5V. -Temperature range: -10-55 degree centigrade. -Humidity range: 0-100%RH. -Temperature accuracy: +3%RH. -Humidity accuracy: +0.3 degree centigrade. -Power supply: USB. -The large display shows a large number of numbers, which is very easy to read and convenient for your use. -It is homes, offices, modern plant greenhouses, laboratories, room, hospitals and other places. -Made of safe and reliable materials, durable and can be used for a long time. - workmanship and good materials ensure a and perfect details. -Perfect for Home, Reptile Tank, Room, Office, Incubator, Garage, Basement and more. Package list: 1 x Hygrometer Thermometer 1 x USB Cable 1 x Introduction Book