1Suitable for many fields such as wind power generation, nautical measurement, outdoor environment detection, various fan manufacturing, ventilation systems, etc. 2Low friction bearing technology, more accurate measurement and more sensitive response, giving you a great using experience. 3Portable anemometer, equipped with LCD display, can read measurement data easily and clearly. 4The measurement range (accuracy) of wind speed is 0.8~ 30.0 m/s (0.1 m/s), 1.4~108 Km/h (0.1 Km/h), the measurement unit is m/s, Km/h, knots, Mph, ft/ min. 5Made of high quality plastic material, durable and reliable, good workman, very practical, small and light, easy to carry. Item Type: Anemometer Material: Plastic Color: As shown in the picture Model: MT905C Size: Approx.175x55x38mm/6.89x2.17x1.5in Battery: 1 x 9V battery(Not included) Display: LCD display Working Environment: The altitude is lower than 2000 meters, RH90% (no condensation) Measuring Wind Speed Range (Accuracy): 0.8~30.0 m/s (0.1 m/s) 1.4~108 Km/h (0.1 Km/h) Sampling Time: 1 time/s Unit of Measurement: m/s, Km/h, knots, Mph, ft/min 1 x Anemometer(Battery Not Included) 1 x Instruction Manual 1. Please allow 1& 8209;2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.