What's this thing on the Headplay strap?

[Banderboy]

It's for attaching something. What?

ETA: I got my Headplays! Woo Hoo! Now I'm waiting for the hdmi module and the RHO lens. Getting excited.

 

[Phantomic]

They are using a gopro headstrap for this thing, so you could use it to mount a gopro camera.

 

[low_budget]

I noticed that with my headplay too. Is the rear mounted GoPro to see behind you, or is it just a way for headplay to buy a cheaper strap for their products?