4-in-1 Portable Anemometer: Professional measurement of wind speed, temperature, volume and wind chill index (display at 0°C), with selection of maximum/average/current speed; 5 wind speed units: m/s, ft/min, knots, km/h, mph; Auto shut-off after 14 minutes of inactivity; Large backlit LCD display for clear readings. In maximum mode, the data storage function is not affected by power off.Accurate Digital Anemometer: The anemometer measures wind speed from 0 to 30 m/s (0 to 65 mph) (+/- 5% accuracy), wind temperature from -10°C to 45°C (14°F to 113°F (+/- 2°C, +/- 3.6°F), with a resolution of 0.1 m/s; uses a sensitive and high-quality six-blade wind wheel to effectively reduce wind resistance and improve measurement accuracy.Multifunctional Handheld Anemometer: Suitable for commercial and home use. For drones, the HVAC, sailing, shooting, kite flying and wind speed testing, check the weather forecast in advance and plan your trip. Ideal for pilots, engineers, captains, sailors and others interested in the weather. Lightweight and practical portable anemometer for outdoor activities: Equipped with a yellow soft rubber protective cover, it effectively protects the instrument from collisions and drops. It can be slipped into your pocket or hung around your neck to free your hands when not in use. Easy to use: This portable anemometer is easy to use. Press and hold the MODE and SET buttons simultaneously to turn off the anemometer. The package contains: 1 anemometer and 1 lanyard.