<p>Double-sided nano-coating protects the lens while ensuring clarity, and the effect is clear and delicate</p> <p>Using CNC technology, the structure is more solid and , suitable for a variety of outdoor environments</p> <p>Oleophobic and waterproof, scratch-, water drops into beads, easy to clean, scratch-, no marks</p> <p>Threaded design, one turn and it is stable. The filter adopts a threaded design for quick installation and removal</p> <p>Aviation-grade aluminum alloy frame, which not add burden to the camera</p> <p>Name:Action camera filter</p> <p>Applicable models:for Action 4</p> <p>The product appearance and printed words depending on the batch, but this does not affect use.</p> <p>Colour:As Shown</p> <p>Material:Optical glass + aluminum alloy</p> <p>Package Contents:</p> <p>1 * Nd8\/PL Filter</p> <p>1 * Nd16\/PL Filter</p> <p>1 * Nd32\/PL Filter</p> <p>1 * Nd64\/PL Filter</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>