WetHot360 is a new 360 camera rig that uses GoPro Hero Session cameras (Hero4 Session or Hero5 Session). The total cost is lower than a GoPro Omni, yet it can still produce 8K 360 videos (using Hero5 Session cameras). In addition, the rig is waterproof up to 10 meters (but please note the effect of refraction underwater).
The video resolution of the WetHot360 rig varies depending on which Hero Session camera and framerate you use. Here are the possible resolutions and framerates:
Another feature of the WetHot360 rig is that there are spaces to allow you to have the Session cameras plugged in and charging while recording with the rig.