Electronic Water Detector, Power Source 9-Volt Alkaline Battery (Not Included), Operating Temp 32-120 Deg F, Overall Length 4.3 In, Overall Width 2.4 In, Overall Height 1.4 In, Waterproof Splash And Water Resistant, Not Waterproof, Floats On Surface, Includes User Instructions WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -