Straightforward Package: The package includes 1 water tester pen, giving you the main unit for setup without implying extra liquids, probes or accessory bundles Clear Screen And Buttons: The front display works with power, hold and mode controls, so daily reading changes stay easy to follow during regular use near sinks, pools or aquariums Five Reading Coverage: Measure acidity, dissolved solids, conductivity, salinity and temperature with a handheld meter, helping you review several water conditions during the same routine check Daily Water Checks: Use it for drinking water review, pool care, aquarium checks and basic sample work when you need a compact meter close at hand Portable Pen Body: The meter is designed for easy hand carry, and the approx 11.82cm / 4.65inch by 4cm / 1.57inch size fits quick checks around counters, aquariums and pool areas, Manufacturer: Kalttoy