GoPro 3+/4 camera external style filter mount plus 52mm True Didymium™ filter ring.
Black anodized aluminum external style filter mount fits the GoPro 3+/4 series cameras.
Internal measurements of the mount opening:
Horizontal: 36.2mmVertical: 33.8 mm
Minor assembly required.
Optional: Add a Neutral Density filter for an additional $50.00!
NOTE: DOES NOT INCLUDE CAMERA!