1. Portable size, easy to use. Save time and money with this chlorine tester. No pollution 2. The large screen displays the pH value and chlorine content of the test results for easy and accurate reading. 3. An perfect tool for keeping your pool or spa within the safe Chlorine and PH ranges, no more chemicals or no more work. 4. For testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels of swimming pools, spas and different water sources. 5. Quality .Notice:it is not including the battery Critical tool for fast and accurate ph & chlorine readings Recommended Chlorine Level for pool and spa:2 to 1.7ppm and 7.2 to 7.8ph for PH Level for pool and spa Light weight and easy to carry, keep your pool/spa water safe, comfortable and corriosion-free. Power Suplly:1 x AA battery(1.5V)(without battery) Note:The detector is not recommended to be immersed in water other than pool or spa water Colour:Gray Material:Plastic Size:Handle probe:150mm long Package Contents: 1 * pH and Free Chlorine Tester with Probe 1 * sandpaper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.