Feature: 1. It is a multifunctional water quality tester, which can test salinity PH TDS EC and ORP of the water. 2. It features high performance, pen shape, fast numerical stability and accurate calculation result. 3. Adopts the digital screen display with backlight, which is more clear and convenient to read data. 4. Suitable for domestic water, food salinity, fish tank, aquarium, farmland, swimming pool, aquaculture, laboratory, etc. 5. IP67 waterproof, this meter can still be used when dropping into the fish tank, convenient to use. 6. Detachable probe design to prevent accidental probe damage,high reliability, easy to operate. Specification: Condition: 100% Item Type: Water Quality Tester Material: ABS+Electron Color: As shown in the picture Size: Approx.183x37mm/7.2x1.46in Weight: Approx.162g/5.7oz Application: For sea water testing, water quality testing Battery Properties/Capacity: 3 x 1.5v LR44 button battery 100MAHIncluded Waterproof Grade: IP67 Package List: 1 x Water Quality Tester 1 x Instruction Manual Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.