Tester Size: 190 x 20 mm Total length of the probe: 150mm Probe Length: 48mm Cable: 300mm Battery: 1 * 1.5V AA battery (not included) Packing list: 1 x pH and Cl2 tester with probe 1 x User manual 1 x Sandpaper - Chlorine and PH Levels: Recommended Chlorine Levels for Pools and Spas: PH levels for pools and spas are 1.2-1.7ppm and 7.2-7 ,8 ph- High Quality: Made of high quality plastic shell, impact resistant, durable and sturdy. - - Uses: Ideal for testing pH and chlorine levels of water in swimming pools and spas Simple operation: easy to use, quickly test if chlorine and PH are within the ideal range /- Easy to read: pH and chlorine content test results are displayed on a large screen, easy to read and accurate -Portable: Compact design makes it easy to carry and handle. -Notice: br/1. Please allow 1-3mm differences due to manual measurement, thanks! 2. Due to the difference between different monitors, please note that the picture may not reflect the actual color of the item.