Feature: 1. With a probe slot, when not in use, the probe can be inserted into the slot, which is convenient for storage. 2. Flexible telescopic extension cord can extend the distance, suitable for various envirinmental measurements. 3. Using 1pcs AA battery, and battery replacement is convenient. 4. There are 2 different modes for the test machine, and rolling the roller can switch between different modes. 5. Compact size and light weight for convenient carrying and storage. Specification: Made of fine quality material, this tester is wear-resistant and sturdy. A convenient tool to test water PH and Chlorine level for water. Easy to operate, you can quickly test whether Chlorine and PH are in the perfect range. Large screen displays the test result on PH and Chlorine level for easy and accurate reading. Features: With a probe slot, when not in use, the probe can be inserted into the slot, which is convenient for storage. Flexible telescopic extension cord can extend the distance, suitable for various envirinmental measurements. Using 1pcs AA battery, and battery replacement is convenient. There are 2 different modes for the test machine, and rolling the roller can switch between different modes. Compact size and light weight for convenient carrying and storage. Specifications: Main body size: 170 * 116 * 31mm / 6.7 * 4.6 * 1.2in Handle probe length: 150mm / 5.9in Probe Length: 50mm / 2.0in Cord Length: 300mm / 11.8in Battery: 1 * AA battery (not included) Item weight: 161g / 5.7ounce Package size: 200 * 150 * 60mm / 7.9 * 5.9 * 2.4in Package weight: 220g / 7.8ounce Packing List: 1 * Chlorine Testing Device Package List: Packing List:1 * Chlorine Testing Device