The IceCap Salinity and Temperature Digital Pocket Tester offers fast and precise salinity and temperature readings for saltwater aquariums. Designed to eliminate the uncertainty of mechanical refractometers, this portable and water-resistant device uses electric conductivity to measure specific gravity and salinity within seconds. With a large, easy-to-read backlit LCD display, it provides accurate results in SG, PPT, and °F. The tester also features high-resolution salinity measurement, temperature reading, and is fully calibratable, making it a reliable tool for maintaining ideal conditions in natural and artificial seawater environments.