Billed as the world's smartest 4K action camera, the Revl Arc comes with sensors and a built in motorized gimbal, using magnets that can stabilize the camera to produce smooth footage as the user skis, surfs or snowboards. There's also a 12MP Sony image sensor, enabling 4K footage capture at 30 fps for up to 90 minutes on a full charge. It can also shoot full HD 1080p at up to 120 fps and 720p at up to 240 fps, as well as 12MP stills. If those features weren't enough, the camera is waterproof to 10 feet and also drop-proof from 10 feet, with no external case required. Reserve yours at the Revl Arc's Indiegogo page.