Item Type: Fish Tank Temperature Hygrometer Material: Plastic Battery Type: CR2032, 1 x Button Battery Capacity: 150mAh (shipped with built in battery) 1,[LED Digital Display]: The digital thermometer has LED digital display, observed temperature and humidity data can be directly displayed, and you can see very intuitive. 2,[High Accuracy Sensor]: The thermometer has a high accuracy sensor that can accurately measure the temperature and humidity of the aquarium with very small errors. 3,[Hygrometer Thermometer]: The measuring equipment can measure the temperature and humidity of the aquarium at the same time, is a hygrometer thermometer, which is very convenient. 4,[Easy to Use]: The use of the hygrometer thermometer is very simple, just tear off the double sided tape packaging, and stick to the appearance of the fish tank, and can measure the humidity and temperature. 5,[Durable Plastic]: The digital thermometer is made of plastic material, sturdy and durable, non toxic and no odor, and can be used to measure the humidity and temperature of the aquarium for a long time.1 x Fish Tank Thermometer Hygrometer Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.