Summary

I used a Logitech C270 with the IR filter removed, which connects to a Samsung Galaxy S20 FE and other similar models, such as the S21 (unfortunately, that's the only phone it supports right now). The IR light is a 44mm security camera light and has some barrel connectors as quick connectors between the battery pack and the NVG unit. The custom battery pack could probably fit other skateboarding helmets that have two vent holes in the back. Otherwise, for FAST helmets, you will need your own battery pack. And the Unit runs on 2 AA batteries and a 9V battery in series so that's 12V, so any 12V battery should work.