Embraces the convenience of a rechargeable lithiums battery, offering extended use up to 35 days, and carry your water company any where with the included protective case Suitable for professional and enthusiasts alike, this Multifunction tool is a must get for hydroponic gardeners, lab technicians, Aquariums caretakers, and maintenance staff Engineered for efficiency, this digital meter boasts a large LCD screen for clear data display, automatic temperature compensation, and a robusts 3 point calibration for consistent result Whether you ' re perfecting the nutrient mix in your hydroponics setups, ensuring safe drinking water, or maintaining best conditions in your Aquariums, this tester is your stable partner Discover unparalleled accuracy with our 5 in 1 Water Tester, featuring simultaneous measurement of Salinities, and temperature, ensuring your water is meticulously monitored, Manufacturer: YROHGKPN