Speed Meter For Shooting Chronograph Speed Meter Velocimetry

This product has accurate speed for projectiles with a speed of 0-3000 m/s. 3 Heat shrink tube light bar. You can save 80 sets of data, and you can see the average value. 2Pair Quieter Longer Flight Propeller Blade Prop 8743F For DJI Mavic 2 Pro Zoom.