(With Plastic Case)digital Pocket Ph Water Meter Tester for Aquarium Pool Spa Wine Hydroponics Test Measuring pH Range: 0.0 - 14.0 pH Resolution: 0.1 pH, Accuracy: 0.1 pH (20C), 0.2 pH Comes in a plastic hard case Comes with a 6 month warranty from Magnum Media - YOU MUST PURCHASE THROUGH MAGNUM MEDIA TO RECEIVE THIS BENEFIT!