The PolarPro Katana Tray System lets you convert your Mavic Pro or Pro Platinum quadcopter into a reliable handheld camera. Once you insert your Mavic into the Katana's harness, you'll be able to capture precise handheld shots in otherwise tight, difficult-to-fly spaces, as well as no-fly zones. In addition to a tray and harness, the Katana also includes a mobile phone mount, so you can use your smartphone as a viewfinder to see exactly what you are filming as you shoot.