This model is no longer available although the electronics inside should be similar. Below are links to other fatshark models. Please note that my using these links I will receive a small commission from HK. I can use the credit to buy more stuff. A great way to support my work at no cost to you, thanks.
Marc takes apart his FatShark FPV goggles for a closer look.
I made a terminology mistake throughout this video, whenever I say 'diopter' I really mean IPD (Interpupillary distance). Diopter is a measurement of magnifying power.
A zipfile of the datasheets is at the bottom.
High res images of the circuit boards.