Fantasea FWAL-01 5121 Wide-Angle Lens for Waterproof Housings For Fantasea housings (except the FS-5, FS-6, FS-9 and FS-51 housings), Olympus housings and any other housing with a 46mm or 52mm threaded lens port Working depth: 50M or 200' Anti-reflection and water repellant lens coating Additional adaptor (#4095) required for the CP-5 and CP-7 housings Additional adaptor (#4096) required for the CP-3, CP-3N, CP-4, CP-6, FL-3, FL-4, FL-6, FP-1 and FP-4 housings