Multi-Function Wind Speed Yacht WatchWind Speed Meter w/ Wind Chill Temp., Altimeter, Barometer, Compass, 10 Laps Chronograph Memory, Yacht Timer (Blue Color)Wind Speed MeterResolution: 0.1 km/hRange: 0.0 to 200.0 km/hBeaufort Wind Scale: 1 to 12 Beaufort ForceAltimeterResolution: 1 m (1 ft)Range: -703 to 9164 m (-2306 ft to 30149 ft)BarometerPressure Trend: Rise, steady & fallResolution: 0.1 hPa/mbar (0.01 inHg)Range: 300.0 hPa/mbar to 1100.0 hPa/mbar (8.84 inHg to 32.44 inHg)ThermometerResolution: 0.1°C (0.1°F)Range: -10.0°C to 60.0°C (14.0°F to 140.0°F)ChronographResolution: 1/100 secondRange: 23 hrs 59 mins 59.99 secsMemory: 10 lapsCountdown TimerResolution: 1 secondPreset Value: 5 preset valueRange: 23 hrs 59 mins 59 secsYacht Timer: Programmable 3-phase-timerBacklightElectro-LuminescentCR2032 3V Battery Powered (Battery not included)Water Resistance: 33 Feet / 10 Meters / 1 ATMThe PSWWM90 watch from Pyle does a whole lot — including measure the wind speed in both kilometers per hour and on the Beaufort wind scale, so it's perfect for sailing and boating enthusiasts. It's also equipped with a high-resolution altimeter, barometer, compass, yacht timer, and chronograph. EL backlight lets you read the watch day or night without external illumination. Color: blue.