Features:The Red Color Correction Filter is the most used in blue waters (bright days， shallow waters， etc.) specially used for recordings in less light or more depth situation，it helps you to capture the real colors. Armed Your Hero， Share Your World. Notice : This filter is compatible for GoPro Hero3+ Diving Housing only.SpecificationsCompatible Brand for GoPro Compatible Models Hero3 +Lens Diameter :42*38mmDimensions : 5.2cm x 4.8 cm x 1.2 cmNet Weight :13gPackage Weight:23g Packing List1 x Filter