It is a fisheye lens, which allows it to capture a wide-angle view of the environment. Made of high-quality materials to that it delivers and clear images. The replacement lens can be installed by removing the old lens and screwing the new lens onto the camera body. The replacement lens is designed specifically for X3 X4 camera, so it is not interchangeable with lenses from other cameras Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:ABS Package Contents: 1x Camera replacement lenses 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.