Bullet Points : 1Wireless 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 degrees Celsius, please note that there may be a deviation of 0.1 degrees Celsius. 2Touch Screen: Touch the fingerprint button to brighten the screen, with LED digital display, high-precision temperature measurement, used for fishes, lizards, tortoises boxes. 3Wide 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. 4Easy to Use: Tear off the detachable adhesive film and stick the thermometer on the outside of the bathtub below the water line. After standing for 10 minutes, the thermometer can be read accurately. 5Kind Reminder: The aquarium thermometer is not water, please do not immerse it in water. Installation Method: 1. Tear off the adhesive film and stick the thermometer on the outside of the fish tank below the water level line. After standing for 10 minutes, the temperature can be accurately measured. 2. Touch to display the real-time temperature, and the display will turn off after 10 seconds. 3. Reminder of battery replacement: low current "Lb" character, please replace the battery in time. Specifications : Name: Fish Tank Thermometer Material: PP+ electronic components Size: about 52*49mm/2.05*1.93in Weight: about 80g Temperature Measurement Range: 0-99 degrees Celsius Temperature Measurement Deviation: about 0.1 degrees Celsius Power Supply: for CR2032 button battery (included) Packing List : 1 x Fish Tank Thermometer Notes: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is tolerance in the product size.