LCD display with backlight. Low battery indicator (battery not included). Wind speed units can be switched between: meters/second, kilometers/hour, feet/minute, knots or miles/hour. When measuring in MAX mode, the meter only displays values greater than the current value; when measuring in AVG mode, the meter displays the average value. Data hold function and maximum and average measurements. Auto power off after five minutes of inactivity Portable digital anemometer with backlight and wind level, suitable for kite flying, model airplanes and drones, sailing, surfing, fishing, hiking, shooting, walking, etc. This anemometer is portable and practical, can measure wind speed and temperature, and can also display wind level and wind coefficient. LCD display with backlight makes it easy to read the values at night. 5 wind speed measurement display units: m/s, km/h, ft/min, knot, mph selection, switch between two temperature units; Long-range shooting Read max/min/average and current wind speed. Know the wind speed, gusts before you pull the trigger. It is an entry-level anemometer, perfect for long-range shooting. Outdoor activities Track wind conditions on shoots. An anemometer can help make every hunt, drone flight, kite flight, and boat trip safer and more enjoyable. HVAC System Accurately check the airflow of air conditioners, vents, dust collectors, and more. Airflow (CFM) (Q) = Flow (feet per minute) (V) x Duct Cross-Sectional Area (A) Natural Wind Ideal for use in windy conditions, tornado chasing, and around the yard. It's time to stay one step ahead of nature. Product Dimensions: 16 x 5.2 x 2.5 cm Note: The data are all measured manually. Due to the difference in light and display, please allow an error of 1-3 cm. Please refer to the actual item received.