So you would like to produce your own VR content? The Z CAM S1 VR Camera has you covered. It has a 4 image sensor system, full metal housing, detachable battery unit, and high quality lenses. The camera can record up to 120 minutes on battery. It has an open API.
The Z CAM S1 offers a 4K@60fps spherical video resolution. It comes with 4 Mini HDMI ports. Expected to ship in December.