Feature: 1. High Accuracy: Water quality tester pen meter not only ensures stable performance but also contributes to exceptional accuracy, making it a trustworthy water quality tester. It enables quick and accurate water quality test. 2. Multifunctional Design: 5 in 1 water quality tester can measure PH, SALT, TDS, EC, TEMP. Fulfill all your testing requirements, fully test water quality. This is a helpful water test kit for your water quality safety. 3. Easy to Read: Multi display on a single screen, allowing for simultaneous seeing of various water quality parameters. The screen displays 3 values at once, with pH and temperature fixed at the bottom. The upper section can be switched to display other values. 4. Convenient to Carry: Lightweight and portable design, allowing for water quality testing anytime and anywhere. This easy and convenient operating design is very considerate and offers premium experience. 5. Wide Application: PH meter is an essential tool to improve your life quality. Digital water test meter applies for multiple uses, suitable for swimming pool, seawater, aquariums, drinking water, or hydroponics. Specification: Item Type: Water Quality Tester Material: ABS Weight: Approx. 155.00g / 5.47oz Length: 183mm / 7.20in Battery: 4 x LR44 Battery (Battery Not Included) TEMP/PH CAL Key: Celsius/Fahrenheit Conversion Key, PH Calibration MODE/EC CAL Key: Function Switch/EC Calibration Key HOLD/ON/OFF Key: Data Hold, ON/OFF Key Wide Application: Food Saltiness, Aquaculture, Drinking Water, Laboratory, Swimming Pool, Aquarium And Other Water Quality Testing. Package List: 1 x Water Quality Tester3 x Testing Calibration Pack1 x Instruction Manual