Features: High quality: made of high-quality plastic shell, impact resistant, durable and sturdy.The fine tool for keeping a pool or spa in a safe chlorine and pH range.Easy to operating, quickly test PH, organic pollution and harmful substancesin water. screen displays the test result on pH and chlorine level for easy and accurate reading.Easy to operate and convenient to carry, you can quickly test whether chlorine and PH are in the fine range.Specifications:Power supply: 1* AA 1.5V battery(Not included)Notices:1. Please 't immerse the probe in any liquid other than pool or spa water.2. Please rotate the switch to close position when not in use.3. Please store the tester in cool and dry place.Material: plasticcolour: as shownPackage Contents:1 x PH and Cl2 Tester with Probe1 x English Instruction Manual1 x Sand PaperOnly 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.