Features: brand new and high quality Wireless Design: There is no need for a wire probe, and the digital thermometer with a high-precision temperature sensor on the back can be directly attached to the outside of the fish tank. The measurement temperature range is about 0 - 99, please note that there may be a deviation of 0.1 . Touch Screen: Touch the fingerprint button to brighten the screen, with LED digital display, used for fishes, lizards, tortoises boxes. Wide Compatibility: It can accurately measure the temperature of different types of water such as fresh water and salt water. It is very suitable for monitoring the living temperature of reptiles such as fishes, lizards, tortoises, etc. Easy to Use: Tear off the detachable adhesive film and stick the thermometer on the outside of the tank below the water line. After standing for 10 minutes, the thermometer can be read accurately. Kind Reminder: The aquarium thermometer is not waterproof, please do not immerse it in water. Package Includes: 1 Piece Aquarium Digital Thermometer Specifications: Material: ABS, Electronic Components Color: Green Size: Approx. Diameter 4.8cm/1.89in Weight: Approx.30g Measurement Accuracy: 0.1 Measurement Range: 0-99 Power: CR2032 Battery Powered (Replaceable) note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!