1.Light weight and , easy to carry. With a hole for convenient hanging<br> 2. screen displays the test on pH and chlorine level for easy and accurate reading, A convenient tool to test water pH and chlorine level for swimming pool and spa<br> 3.Easy to operate, no more chemicals need, Made of premium plastic shell, durable and sturdy<br> 4.Notice:it is not including the battery,when you use ,you should see the manual,and if it is the sea water,it cannot tester.<br> Battery type: 1 x AA battery 1.5v (not included)<br> Material: Plastic<br> colour: As shown<br> Package Contents:<br> 1 x Water quality online analyzer<br> 1 x Sandpaper<br> Only the above package content, other products are not included.<br> 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.