Product name: Digital Material: Plastic, Battery: -in LR44 button battery (included) Ambient temperature: -50 ℃ -70 ℃ Operating temperature: -10 ℃ -50 ℃ Size: 5.8 cmx3.7 cmx1.6 cm / 2.28 1.46 0.63 in Note: Digital reading deviation of 1 , thank you very much for your understanding. Dip the probe into the aquarium to measure the water temperature, but do not dip the into the water. The product color may be slightly different from the picture due to differences in lighting and screen Settings. Due to manual measurement, please allow a slight difference in size. You can choose either or Celsius as desired. | The is light in weight, small in size, simple in design, easy to carry and easy to use. | With LCD digital display, digital for easy reading data. | Digital are made of high-quality plastic and materials, , wear- and reliable. | The digital has a length of 5.8 cm, a width of 3.7 cm and a thickness of 1.6 cm. | Suitable for , aquarium, tank, etc. | and suitable for water, tap water, , sea water and other different types of water.