Feature 1Accurate and Reliable: Water quality tester pen meter not only ensures stable performance but also contributes to exceptional accuracy, making it a trustworthy water quality tester. Utilizes voice prompts for water quality testing, ensuring accurate and reliable results. 2Multifunctional Design: Water quality tester can measure PH, TDS, EC of water. Fulfill all your testing requirements, fully test water quality. Get healthy pure drinking water or other use water. 3Easy to Read: PH meter with digital screen helps you see the measurement clearly in any situation. Just dip the probe of the PH tester into the liquid to start the test PH, TDS, EC, and more. 4Convenient to Carry: It's compact and doesn't need any maintenance. Lightweight and portable design, allowing for water quality testing anytime and anywhere. 5User Friendly: Simple and easy to understand operating interface, water test meter is suitable for users with varying levels of water quality testing experience.Item Type: Water Quality Tester Pen MeterMaterial: ABSWeight: Approx. 171.00g / 6.03ozBattery Type: Built In Lithium Battery (Included)Battery Model: 4 x LR44Battery Capacity: 400mAhTemperature Range: 0-60Product Size: Approx. 183x43.7mm / 7.2x1.7in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xWater Quality Tester Pen Meter3 x pH Calibration Powder1 x English User Manual