Measurements: Heading (true and magnetic), Wind Direction, Crosswind, Headwind/Tailwind, Altitude, Pressure Trend, Barometric Pressure, Relative Humidity, Heat Stress Index, Dewpoint, Wet Bulb Temperature, Density Altitude, Wind Chill, Air, Snow and Water Temperatures, Current and Average Wind Speeds and Maximum Wind Gust, Customizable 2900 Data Point Storage, Data Upload (with optional interface). Unit is supplied with 2 AAA batteries, a soft carry pouch, impeller cover, instructions and a Certificate of Conformity.