1. Large display, capable of simultaneously measuring water quality pH, oxidation-reduction potential, conductivity, and temperature; 2. Equipped with backlit LCD display, clear, fully functional, and high precision; 3. The instrument adopts microcomputer measurement and control technology, with automatic calibration function, which is convenient and practical. 4. Built in Bluetooth, can be connected to a computer or Android phone for data collection and monitoring. 5. Can store 50 measurement records. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Voltage: AC220V/AC110V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Color: As Shown Material: ABS Package Contents: 1set x Water Quality Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.