The waterproof ADC Summit measures wind speed, current temperature, and water flow with the touch of a button. Displays current, max, and average wind speed in five measurements. Shows past 24-hour temperature tendency; current, average, and minimum wind chill; water speed and water flow meter; time, day, and date; and race timer. Weighs: 2.4 oz. Measures: 4.3" x 2" x 0.8". Two-year warranty.