"Fast and Accurate Reading: Just turn on, dip in liquid and read the display, no need to work with color charts or test strips. Large digital display makes it easy to read. Large LCD screen with great waterproof performance makes you easy to read the displayed value.^ Auto Calibration: 2-point auto calibration, automatic identification of standard liquid, advanced electrode. The sensitive sensor makes direct contact with the tested solution, quickly and accurately.^ Automatic Temperature Calibration: Don't worry about the effect of temperature change on pH, pH will automatically adjust the temperature. Full pH 0-14 measurement range, 0.01 pH resolution.^ Easy to use: just remove the protective cap and immerse the pH meter electrode in the solution and press the button to measure.^ Versatile: Ideal for pH testing at home and in the lab including drinking water, swimming pools, aquariums, hydroponics, etc." Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.