Epson Moverio BT-45CS AR Smart Glasses with Intelligent Controller - Manual (Page 19)

Wearing the Headset
19
E Attach the helmet attachment bracket to the headset
with the screws (M3). F Turn the adjustment screw on the helmet attachment
bracket to securely attach the headset to the helmet.
Align the adjustment screw with the center of the brim of the
helmet, and insert the tip of the brim all the way in to secure it.