Here is an action camera that lets you record 4k @10fps video on the go. The Revl Arc comes with advanced stabilization system and lets you edit and share your work with others easily. The device comes with 4 sensors to capture acceleration, rotation, speed, and G-force. It also supports external sensors.
Revl Arc supports live streaming. It connects to your phone via WiFi. The developers will be making various mounts and accessories available for the device. More information is available here.