The package contains the water tester with metal sensors, measurement guide, battery compartment, protective case This water testing device features an illuminated LCD screen to measure total dissolved solids, conductivity, and temperature for thorough water assessment, suitable for both home and professional use Designed for user convenience, it includes a data hold function, strength and mode selection buttons, additionally a bright display that ' s visible in low light conditions Compact and portable at 5.91 inches long and 0.65 inches wide, it comes with a protective carrying case and cover for easy transport and storage With wide detection capacity from 0 9999 ppm for total dissolved solids and accurate readings, this tool functions well for checking tap water, Manufacturer: Geavonyg