Scuba Underwater Photography Accessory Color Correction Snap On Flip Up Filter for GoPro Hero 3+, Hero 3 Plus, Hero 4 Camera Standard Waterproof Housing (Black Aluminum Lens Adapter) Compatible with GoPro Hero3+ / Hero4 standard housing only (the housing features no screws on the outer housing around the lens) Color correction for tropical and blue water scuba diving. Dramatically improves underwater colors Flip up design allows users to quickly add or remove the filter for land and water use or as color drops off with depth Snap-on design makes it easy to install and remove; Made of CNC aluminum and tough optically correct acrylic Package included: Black Aluminum Adapter Red Filter x 1 (GoPro camera, housing and other color filters are NOT included); Free touch screen stylus pen is included (Random color shipped)