This topstrap is developed by Pimax and works with an adjustable knob and strap that goes on the top of your head. You can secure the strap with screws next
Blogs Archives
Testing another headstrap option for the Crystal in our workshop
Pimax Crystal Apache Comfort Strap
Pimax Crystal Top-Strap Review: Saving necks all around the world
Crystal Comfort Topstrap
Pimax San Jose CA
The Crystal is more comfortable than you think! Tips, Accessories
Crystal Comfort Topstrap Goes On Sale
Pimax Crystal unboxing and first try 4K