Description: 100% authentic and brand new. Large, easy-to-read LCD Display For fresh and saltwater aquariums It is convenient to install and read Waterproof design, can be completely immersed in water Made from a durable plastic that is for your aquarium High accuracy thermometer, which is specially designed to measure tank temperature Protect your from unsafe temperatures with the submersible Digital Aquarium Thermometer. Simply affix the thermometer to the inside of the aquarium (below the water line) using the suction cup attachment, and you& 39;re ready to go. Specification: Tank temperature display high and low temperature automatic alarm (the default high temperature 28 , low temperature 18 ) Temperature measurement range: inside the tank temperature 0 ~ 37 + (32 ~ + 99 ) Use battery: 1.5v (AG13) x 1 Size Chart: Machine Size: Approx. 52x32x30mm/2.04x1.26x1.18 inch Package Includes: 1 Piece DC-16 Mini Thermometer 1 Piece Suction Cup. Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color of the pictures and the actual item.