Function: 1. Excellent water quality testing tool, mainly used to measure pH and chlorine levels in swimming pools, spas and various water sources. 2. Portable water monitor, using high quality ABS material, durable and wear-resistant, corrosion-resistant. 3. With its high measurement accuracy and stable performance, it can quickly read PH and chlorine values. 4. It can keep your pool or hot spring water within a safe chlorine and pH range. 5. The small size, suitable for outdoor transfer, helps to detect the pH value and chlorine value of various water sources. Specification: Item Type: Tester Water Material: ABS pH Range: 5,5-9,0ph CL2 Range: 0-3,0 ppm Battery: 1 x AA 1,5 V alkaline battery (battery not included) Application: tester pool water quality, PHPH test pen Recommended chlorine content for swimming pools and spas: 1,2-1,7 ppm Recommended PH for pool and spa: 7,2-7,8ph Weight: Ok. 265g / 9,3 oz Product Size: Ok. 180 x 125 mm / 7.1 x 4.9 inch Measuring cable: Ok. 150x20mm / 5.9x0.8in List of packages: 1 x tester water (battery not included) 1 x Sandpaper 1 x User Manual