For additional safety when flying indoors or near people, use the 360° Propeller Guard for Mini 4 Pro from DJI. The guard fully surrounds the Mini 4 Pro's spinning propellers, protecting bystanders and property from direct contact with the propellers in the case of an accident. Please note that the Mini 4 Pro must have firmware v01.00.0100 or later, built-in obstacle avoidance can no longer be used with the guard installed, and the guard can't be used with the Intelligent Flight Battery Plus due to weight considerations.