Specification:Item name: OSMO Action filterMaterial: Aluminum, optical glassNet weight: 8.1gSize: 30.8mmx8.3mmFeatures:Effectively supplement red lightGuarantee camera waterproof performanceOptical GlassMulti-layer nano-coatingPackage included:1 xPGYTECH OSMO Action Diving Filter/Snorkel Filter Optical Glass Filter for DJI OSMO ACTION Camera Accessories