DJI P4P PART 137 9455S LOW-NOISE QUICK-RELEASE PROPELLERS (PRO/PRO+V2.0)

The 9455 propellers have a brand new aerodynamic design giving the Phantom 4 series an impressive noise control performance. When used with the Phantom 4 Pro V2.0, up to 4dB (60%) of aircraft noise is lowered during takeoff and landing. Noise reduction is also enhanced when used with the Phantom 4 Pro, but not as much.