Fantaseal Professional 2-in-1 Dive Lens Combo Diving Lens Filter Underwater Lens Filter, Red Filter + 16X Macro Lens w/Anti-Slip Safety Lock Compatible with Hero 4/3+ (for Blue/Tropical Water) ONLY compatible with GoPro Hero 4 GoPro Hero3+ GoPro Hero GoPro Hero+ GoPro Hero+LCD Super 58mm High light-transmittance Optical Glass, you can capture more clearer and brighter picture under water. 4 switchable Working Statuses are extremely versatile allowing you to film with both the red and macro lens at the same time. Color correction in Blue & Tropic water under 5-60 Meter. (Not suitable for Lake/River water) 16 x close up macro lens both for aquatic & terrestrial life, allowing you to capture sharper closeups than ever before. Safety Lock for mounting firmly, and keep the lenses closed or open under the roughest ocean conditions.