This is the best RED filter for your GoPro, high quality glass for underwater shots. Red is the first colour lost underwater, and usually absent from photos/videos even in direct sunlight at 1m. This filter returns the red spectrum (therefore heaps more colours) to your images and video.

To top it off, a macro swing filter is included so you can get closer than the wide angle allows! A great feature for macro photography, or pulling those far away things in close!

The filter is brand new, never used. I was told a new version was coming out and company paid for it so I didn't open this one after ordering it. The RRP in the states is $69.95, so this is a bargain plus no international shipping.