Features: Built-in high precision chip, high water measuring accuracy. High definition LCD display, large screen display, clear numerical value, easy to read. Widely used for aquariums, swimming pool, drinking water, watering plant and more. 7 in 1 multifucntional, switch as you need, can be used to detect PH-TDS-TEMP-EC-Salinity-S.G-ORP. High quality material, IP67 waterproof, anti-deformed, durable in use. Small and compact, lightweight, easy to carry with. Package Includes: 1x Testing Meter Specifications: Material: Plastics Test Range: PH: 0-14 TDS: 0-200000ppm EC: 0-200000 Salinity: 0-20% ORP: 1999MV S.G: 1.000-1.222 TEMP: 0-60 Size: Approx. 185x37x24mm/7.28x1.46x0.94in note: 3x 1.5V batteries needed.(NOT Included) Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.