About This 【Package Includes】 You will receive a thermometer, a screwdriver and an extra sticker. (1pc CR2032 battery included) 【Wide Measuring Range】The temperature measurement range of our fish tank thermometer is 14℉~140℉, -10℃~60℃, the accuracy is 0.1℉/0.1℃, which can meet the needs of different water temperatures, Led lamp flashes when it's lower than 59℉/15℃ or higher than 93℉/34℃. 【Mini& Compact Size】 Designed in minimum size, no shelter from your sight, convenient to view your little pets. 【Extra Sticker】Equipped with an extra sticker for measuring water temperature of one more aquarium tank, durable and Long-lasting to use on the fish tank thermometer. 【Easy to Use】Peel off the backing film and stick on fish tank lower than water level, then stick thermometer on sticker, touch ON/OFF button to power on. Overview Brand : Moonorange Special Feature : Fast Reading System, Auto Off Color : Green Age Range (Description) : Adult Included Components : screwdriver, Magic Sticker Display Type : Digital Product Care Instructions : Wipe Clean Power Source : Battery Powered Number of Batteries : 1 CR2032 batteries required. Item Length : 1.89 Inches