Features: 1Portable: The digital water quality detector is small and portable; no matter where you are, traveling, playing, shopping, you can detect the TDS value of water at any time. 2LCD Large Screen Display: Dual display of screen data, simultaneously display water quality TDS, conductivity EC and temperature value with data retention function, easy to deal with a variety of environments. 3Easy To Use: Press the switch, put the test pen into the water to be tested, the lower the TDS value, the lower the total dissolved solids content in the water, and the purer the water quality. 4Suitability: Suitable for any type of test to check TDS or EC in your aquarium, swimming pool or any water source. 5High Sensitivity: Sensitive probe purity is instantly visible and durable high accuracy for near accurate readings. Item Type: TDS EC Meter Material: Plastic Battery Type: Button Battery Product Size: Approx.30 x 14 x 152mm / 1.2 x 0.6 x 6in Package Included: 1 x TDS EC Meter