Feature: 1. This 1.55X wide lens adopt premium optical lens for high light transmittance and high definition image. 2. This action camera lens are easy and convenient to install and operate, with small and portable design. 3. This action camera lens can effectively broaden the 42% horizontal shooting field, providing more convenience. 4. This action camera lens has stable and excellent performance to provide movie like texture while recording videos. 5. This action camera lens are practical and perfect accessory for Hero 9 Black action camera. Specification: Item Type: 1.55X Wide Lens Material: Optical Glass and Aluminium Alloy Structure: 2 Pieces in 2 Groups Compatibility: Suitable for Hero 9 Black Action Camera. Package List: 1 x 1.55X Wide Lens1 x Lens Cover1 x Cleaning Cloth Note: 1. Before using the external Movie Scenes, first remove the original camera protection lens, and then install the Movie Scenes. 2. The external Movie Scenes can be used in the video mode <Linear 19‑39mm> and <Narrow 27mm> settings. For example, under the mode <Super View 16mm> and <Wide 16‑34mm> settings, dark edges will appear. 3. If the anti‑shake mode is turned on, during strenuous exercise, dark edges will also appear under the mode of <Linear 19‑39mm> and <Narrow 27mm>. 4. If there is vignetting in the mode of the photo <16‑34mm in width>, there will be no vignetting in the modes of <linear 19‑39mm> and <narrow 27mm>. 5. You can also enableMovie Scenes in M A X lens mode. 6. There will be horizontal stretch glaring when shooting spot lights at close range. This is a normal condition and a feature of this lens. 7. Rotating the camera screen when using the lens, the screen will be deformed to a certain extent, this is a normal condition. 8. The use of the lens picture requires post‑correction, which is the same as the previous movie lens.