1、[Use] Immerse the probe into fish tank to measure the water temperature. (immersion probe only, do not immerse the thermometer in water) 2、[Easy To Read] Fish tank thermometer with easy to use suction cup and easy to read LCD display; temperature readings within 0.1 °C. 3、[Functional Characteristics] Digital aquarium thermometer has stylish appearance, small and compact, ℃ ℉ temperature conversion. 4、[Technical Parameters] Measurement Range: ‑50℃∽ +70℃; Operating temperature: ‑10℃~ +50℃; Resolution: ± 0.1℃. 5、[Wide Application] Aquarium thermometer is suitable for water or high humidity environments such as aquariums or animal feeders, for different water types such as freshwater, tap water, brackish water and seawater. 1 x Aquarium Thermometer1 x Suction Cup1 x Button Battery  Item Type: Aquarium ThermometerMaterial: ABSSize: Approx. 5.8x 3.5cm / 2.3x 1.4in Battery Type: Button Cell (LR44) (shipped with matching battery)Battery Capacity: 160mAhFunctional Characteristics.Stylish appearance, small and compact, suitable for aquarium. ℃ ℉ temperature conversion.Technical Parameters.Measurement Range: -50℃∽ +70℃.Resolution: ± 0.1℃Accuracy: ±1℃