Amazon.com: Release and Drop Professional Device for DJI Phantom 4 (all models) – Drone Fishing, Bait Release, Load Delivery, Search and Rescue and Fun – U.S. Patent - by DRONE SKY HOOK :
Amazon.com: DJI Phantom 4 Advanced+ (Plus) Drone Quadcopter 4K Camera Built-in LCD on Remote : Toys & Games
DJI Phantom 4 RTK Combo w/ D-RTK 2 Mobile Station and DJI Enterprise Shield Basic - 1UP Drones