SUPERIOR DURABILITY - Crafted with robust materials, this Freewell ND4 filter ensures long-lasting performance, protecting your GoPro HERO13 Black lens in various conditions. ENHANCED IMAGE QUALITY - Experience crystal-clear footage with reduced glare and balanced exposure, thanks to the high-quality optics of this neutral density filter. SEAMLESS COMPATIBILITY - Designed specifically for GoPro HERO13, HERO12, HERO11, HERO11 Mini, HERO10, HERO10 Bones & HERO9 Black, ensuring a perfect fit and easy installation. OPTIMAL LIGHT CONTROL - The ND4 filter reduces light by 2 stops (0.6 density), allowing for smoother, cinematic videos in bright, outdoor environments, enhancing your shots.