Specification: Material: PlasticColor: White,GreyMain Unit:Approx.175 X 20mmHandle Probe:Approx.150mm (L)Probe (only):Approx.48mm (L)Battery:1X 1.5V AA battery(Not included) Recommended chlorine level for pools and spa is 1.2 to 1.7ppm Recommended pH level for pools and spa is 7.2 to 7.8 Package List: 1 xPH/CL2 Meter 1 xManual Note: The detector will not recommend immersion, except for pool or spa water. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }