DJI Phantom 4 RTK Drone +DJI D-RTK 2 High Precision GNSS Mobile Station+DJI D-RTK 2 High-Precision GNSS Mobile Station - Tripod Combo Combo Include following items, you can check more details about these using below links: DJI Phantom 4 RTK Drone: DJI Phantom 4RTK, when used with a D-RTK antenna or NTRIP RTK signal, will provide centimeter-level accuracy on 3D maps. For more Information: DJI Phantom 4 RTK Drones DJI D-RTK 2 High Precision GNSS Mobile Station D-RTK 2 Mobile Station is compatible with Phantom 4 RTK, MG-1P RTK, and Agras T16. It can be used as a Continuously Operating Reference Station (CORS), which provides high precision positioning data within the cover range of the base station, making it the ideal tool for surveying, aerial inspections, agriculture, and other industrial applications. For more Information: DJI D- RTK 2 High Precision GNSS Mobile Station DJI D-RTK 2 High-Precision GNSS Mobile Station - Tripod A tripod for setting up the D-RTK 2 High Precision GNSS Mobile Station. For more Information: DJI D-RTK 2 High-Precision GNSS Mobile Station - Tripod