Features LCD display: The aquarium thermometer is equipped with a large LCD, the data is clear at a glance, so you can accurately understand the real-time temperature Measuring temperature range: The water thermometer is accurate enough to create a reading within 0.1 degrees. The measuring temperature range is 0℃-37℃/32℉-99℉ Suction cup design: LCD digital waterproof thermometer does not require a sensor cable, just connect it to the inside of the aquarium with a suction cup High and low temperature automatic warning: Water thermometer has automatic high and low temperature warning function, the default high temperature is 28℃, low temperature is 18℃ Waterproof design: Aquarium temperature gauge adopts wireless integrated probe and waterproof design, very suitable for fresh water, salt water and sea water, fish tanks or used to monitor the living temperature of reptiles such as lizards, turtles, and tortoises Features: With a Large LCD screen: easy to read the temperature at a glance. Very precise: this thermometer is accurate enough to create readings within 0.1 degree. No sensor cable needed, simply attaches to the interior of your aquarium with the suction cup. High and low temperature automatic warning: default high temperature 28℃, low temperature of 18℃.   Wireless with integrated probe and waterproof design, perfect for fish tank or other place. Specification: Type: DC16 Weight: Approx.34g/ 1.2oz Size: Approx.52 * 32 * 20mm/ 2 * 1.3 * 0.8in Accuracy: ±0.1℃ Temperature Range: 0℃-37℃/32℉-99℉ Battery: 1.5V AG13 * 1 (Not Included) Package List: 1 * Digital Thermometer Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List