Pocket-size meter measures air velocity, temperature, relative humidity, dew point and windchill. Includes tripod mount, 43in. lanyard and CR2032 lithium battery. Selectable averaging function of 5-, 10- or 13-second intervals Fold-up protective housing (extends to 9in.) Water-resistant housing that floats Data hold with auto power off Includes tripod mount, 43in. lanyard and CR2032 lithium battery Model 45158