Measurements Range Resolution Basic Accuracy ft/min (feet per minute) 216 to 3936 ft/min 20ft/min ± (3%rdg 40ft/min) m/s (meters per second) 1.1 to 20.0m/s 0.1m/s ± (3%rdg 0.2m/s) km/h (kilometers per hour 4.0 to 72.0 km/h 0.7km/h ± (3%rdg 1.4km/h) MPH (Miles per hour) 2.5 to 44.7 MPH 0.2MPH ± (3%rdg 0.4MPH) knots (nautical miles per hour) 2.1 to 38.9 knots 0.3knots ± (3%rdg 0.6knots) Beaufort Force 1 to 8 BF 1 BF ± 1 Temperature 0 to 122°F (-18 to 50°C) 0.1°F/°C ±1.8°F/±1°C Power CR2032 Lithium battery Dimensions 5.25 x 2.75 x 0.75″ (133 x 70 x 19mm) Vane 1″(24mm) diameter Weight 3oz (95g)
