Description Tester size: 190x20mmTotal probe length: 150mmProbe length: 48mmCable: 300mmBattery: 1 * 1.5V AA battery (not included)packing list: 1 x pH and Cl2 tester with probe1 user manual1 x Sandpaper- Chlorine and PH levels: recommended chlorine levels for swimming pools and spas: PH levels for pools and spas are 1.2 to 1.7ppm and 7.2 to 7.8ph-High Quality: Made of high quality plastic shell, impact resistant, durable and sturdy.- - Uses: Ideal for testing pH and chlorine levels of water in pools and spas-Simple operation: Easy to use, allows quick testing if chlorine and PH are in the ideal range- Easy to read: pH and chlorine test results are displayed on a large screen, easy to read and accurate-Portable: compact design makes it easy to carry and handle.-Reviews:1. Please allow 1-3mm differences due to manual measurement, thanks 2. Due to the difference between the different monitors, please note that the image may not reflect the actual color of the item.