Features: 1. ND Filter Set, Movie-Like Blockbusters, One Shot 2. Motion Blur Effect, Full Of Cinematic Feel 3. ND Filter Combined With GO 3S Adjustable Parameters Can Easily Achieve Movie-Like Motion Blur Effect. 4. Long Exposure Artifact, The Night Is Even Better 5. Through The Use Of ND Filter Set, GO3S Can Achieve Longer Exposure Shooting And Record Unique Light And Shadow Effects, Such As Busy Traffic At Night, Star Track Time-Lapse, Etc. Description: 1. Material: Aluminum Alloy + Glass + Silicone 2. Diameter: 20.7mm 3. Thickness: 4.1mm Color: As Shown Instructions For Use: 1. Unscrew And Remove The Camera Lens Protector Counterclockwise. 2. Choose And Install A Suitable Nd Filter. 3. Tighten The Nd Filter Clockwise. Package Contents: 1 x ND8 Filter 1 x ND16 Filter 1 x ND32 Filter 1 x ND64 Filter Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.