Precise measurement - The aquarium thermometer measures water temperature from 0 to 50°C Can be put directly in the aquarium and is of course 100% waterproof Super Suction Cup - A super strong suction cup holds the thermometer firmly to the glass FOR ALL AQUARIUMS - The thermometer is suitable for any type of aquarium. with seawater or freshwater Package contents: 1 package * thermometer 【Note】 The package does not include batteries We only sell thermometers, not other items in the picture. Due to the differences between the different monitors, the pictures may not reflect the actual color of the item. Due to the manual measurement, please allow a slight error in size.