Features: 1. ACG Optical Glass, High-Quality Lens Grinding Process, Good Physical And Chemical Properties, Clearer Imaging 2. Enrich Your Space 3. Multi-Layer Coating Light Reduction Technology Is Adopted To Restore The 4. Anti-Oil, Anti-Fouling, Anti-Scratch, Effectively Protect The Lens Of The Sports Camera 5. Design, Strong And Durable Description: 1. Material: Metal Frame+ACG Optical Glass 2. Size: 3.2 x 3.2 x 0.6cm 3. Applicable Models: ACTION 3 4. Type: Filter 5.Color: As Shown Package Contents: 1 x ND16 Filter 1 x ND32 Filter 1 x ND64 Filter 1 x Filter 1 x Cloth (Random color, 't accept the specified color.) 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.