[Upgrade with High Accuracy]: This PH meter with Built-in a sensitive electrode sensor, simply press "ON" and the result of the PH will appear on screen in a few seconds. Measurement Range: 0.00~14.00pH; Accuracy: +0.01pH [Easy Measurement & Calibartion]: The PH meter has an automatic temperature compensation function. It comes with 3 packs of calibration powder. When it is long period of inactivity or after a frequent use, you can calibrate the tester with auto-calibration button for a proper calibration. Please refer to the Instructions manual. [Portable Size & Wide Use]: This small PH tester allows you to carry in pocket and measuring anywhere. It is great for a wide range of drinking water, swimming pools, aquariums, hydroponics, food, wine, beer or any other liquids. [AUTO Temperature Compensation]: No more need to about the temperature of testing liquid. Our pH meter has built-in ATC function, It can accurately measure the pH value of the sample at any temperature in the range of 0 C-60 C. [LCD Backlight Display]: PH tester bright backlit LCD display, easy to use no matter in the day and night environment, and accurate measurement and clear display results. Material:ABS colour:green Package Contents: 1 x PH meter 3 packs x calibration powder Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.