Air Velocity and amp; Temperature Measurement * Max/Average/Current Air Velocity Measurement - LCD Backlight - Weight: 1.83-Ounce * Wind Speed In MPH, Ft/Min, Km/H, M/Sec, or Knots (Accuracy: +/- 5-Percent) - Low Battery Indicator - Dimensions: 1.57"" x 0.707"" x 4.127"" * Wind Speed In Beaufort Wind Scale with Bar Graph - Auto Power OFF * Wind Chill Display - Neckband Accessory Included * 3V Lithium Battery Required (Included) * Air Velocity & Temperature Measurement * Auto Power OFF * Dimensions: 1.57"" x 0.707"" x 4.127"" * LCD Backlight * Low Battery Indicator * Max/Average/Current Air Velocity Measurement * Neckband Accessory Included * Sold as : Unit * Temperature Display °C/°F (Accuracy +/- 2%) * Weight: 1.83 oz. * Wind Chill Display * Wind Speed In Beaufort Wind Scale With Bar Graph * Wind Speed In MPH, Ft/Min, Km/H, M/Sec, or Knots (Accuracy: +/- 5%)