Description: Submersible tank thermometer to measure water temperature to make sure it right for living; With suction cup to fix and LCD screen easy to read,temperature readings to within 0.1 degree; Large temperature measuring range from -50 degree celsius to 70 degree celsius; Operating temperature -10 degree celsius to 50 degree celsius; Simple operation, small compact size, perfect for pet aquarium water meter; Waterproof, no sensor wire required, battery power set,easy operation. Specification: Material: Plastic Resolution: 0.1 degree Accuracy: 1 degree celsius Apply power: battery, DC1.5V Target: pet owner, store owner, carer. Temperature measuring range: -50 - 70 degree celsius Feature: waterproof, submersible, suction up, small compact, high acuracy, care meter. Size Chart: 46.5 x 27.5x 29.5mm/ 1.83x1.08x1.16inch Package Includes: 1 piece water thermometer in 1 pack(not including battery) Note: Due to the manual measurement, there is a slight difference between the size from the above and the actual item. Because of the displaying and lighting effects, monitor settings,etc.there could be a little color difference acceptable, please kindly note. Dont hesitate to contact us if you have any question when you use it, we will try our best to meet your satisfaction.