Amazon.com: 2 Pairs Propeller Compatible with Go Pro Karma, Go pro Karma Accessories Quick Release Propeller : Toys & Games
This is GoPro's $799, foldable Karma drone | Engadget
Amazon.com : hohem iSteady Pro 4 3-Axis Gimbal Stabilizer for Gopro 11/10/9 8/7/6/5, for Osmo Action and Other Action Cameras - Support Bluetooth & Cable Control,IPX4 Splash Proof with Tripod : Electronics
Amazon.com: Master Airscrew Upgrade Propellers for GoPro Karma with Built-in Nut - Blue, 4 pcs : Electronics