Here's a look at the Wearable Gimbal from Feiyu Tech. Most 4K action cameras do not have image stabilisation for the 4k/UHD modes, a notable exception being the expensive Sony FDR-X3000R http://amzn.to/2fY6GwV which uses optical image stabilisation. So that's where this device comes in, it stabilises the motion of any action camera that fits within its mount, but it's not perfect. Watch the video to learn more. Feiyu Tech have already brought out a newer version, the WG2. I haven't tested this, but hopefully it rectifies the tilting issue of its predecessor.