Light & Motion Nightsea Flip3 Camera Filter (for GoPro Hero 3.0, 3.1 & 4.0) Underwater Flouro Diving Accessory Attaches to GoPro Hero 3 & 4 cameras Yellow Barrier filter to record fluoro diving footage Simple installation with clamp-on design Requires Light & Motion Sola or GoBe Nightsea lights for desired fluoro effect