Are you looking for reliable and convenient water quality tester? want to ensure that your drinking water is safer? Our products will be your . It is made of craftsmanship and plastic material, has excellent durability and practicality, can help you quickly detect water quality, and provide more possibilities for ensuring your drinking . It will be your great tool choice. Features - Color: Mainly white, green. - Material: ABS, electronic component. - Size: 15.20X3.20X1.60cm/5.97X1.26X0.63inch. - Calibration method: 3-point automatic calibration. - Battery: 2X 1.5V ( ) - PH Range: -2.00-16.00 PH. - Temperature range: 0-80ºC/32.0-176°F. - Reset function: Press and hold the power button for 3 seconds in the power-on state, then release your hand, when the screen appears: "----" reset successfully. - Automatic temperature compensation function: 0-80ºC. - Power-off data storage function: After the battery is pulled out, the data will be automatically saved, and the storage time will be one month. - Test paper function: The color of the backlight will change with the PH value, just like litmus paper. - It is made of plastic material, strong and , and . - The water quality tester pen is a very practical tool. Clean drinking water helps protects the health of children, the elderly, and pregnant women. - The water quality test pen is more compact and convenient for you to carry and use. - The wonderful workmanship, also for temperature testing, multipurpose and practical for you. - With high-definition digital screen display, reading data is more clear and convenient. Package list: 1 Quality Tester Pen 1 x Manual 3 Bags x PH Powders