For 360 Go 3S, filter set, all-around protective coating, aviation-grade aluminium alloy frame,clear opticaled glass. 28-layer crystalline coating, anti-mould, scratch-resistant, waterproof, and oil-resistant coating, enhancing light transmission and colour reproduction. Waterproof, oil-resistant, and coating + opticaled glass + light-reducing coating Lightweighted aluminium frame/opticaled glass/ Multi-layer coating, 360 Go 3S filter set, cinematic-quality shots, effortless photography Adjustable filter, adjustable, adjust light intensity by rotating the gear to select the appropriate brightness. Package includes: 1PC Filter