D+La Crosse Technology EA-3010D+For sailors, surfers, hang-gliders, or kite-fliers, this nifty gadget is a must-have for keeping tabs on current wind conditions. The tiny handheld anemometer comes in a sporty, yellow, plastic, weather-resistant casing, making it ideal for use during water activities or rainy weather. About 5 seconds after powering up, the anemometer reports the current wind speed in either miles per hour, kilometers per hour, meters per second, or Knots plus, displays wind speed on a Beaufort Scale bar graph. The module also records the maximum and average wind speeds for any 2- to 10-second period of time, and recalls them at the user’s prompting. This anemometer also measures current temperature in Fahrenheit or Celsius and wind chill. The LCD screen has a backlight, making the display easy to read even in low-light conditions. The display automatically turns off every 8 seconds in order to preserve the life of the 3D+Measures 1.50in L x 0.75in W x 4.00D+Display wind speed in mph, km/h, m/s, knots -Beaufort scale bar graph (0-12) This is a system for estimating wind force without the use of instruments based on the visible effects of the wind on the physical environment (0-Calm up to 12D+Display the ambient temperature in Fahrenheit or Celsius. -21.8 °F to 138.2 °F with 0.2° resolution (-29.9°C to +59°C with 0.1D+Is water resistant and includes one 3V CR2032D+Beaufort Scale Bar Graph (0-12D+Neck Band Included for Easy Carrying (18D+Maximum Measured Speed : 67D+Minimum Measured Speed : 0.44D+Temperature Measuring Range : -21.8 to 138.2D+1 CR2032D+