Apollo bio metal Biomask by Nippon Sensuiki Co., Ltd. Retail price: 23,100 yen ◾️The perfect mask for photographers Underwater photography requires tasks such as looking through a viewfinder. Many professional photographers have reported that the mask frame gets in the way or that the lens obstructs the viewfinder's field of view. When you use the Biomask series, many people are pleased and satisfied. This is because the frame portion protruding in front of the lens has a very thin structure, and the proximity of the eye to the lens surface due to the extremely small internal volume is effective for the viewfinder. ◾️Aluminum alloy machined frame for lightweight and superior strength The mask uses a luxurious aluminum alloy machined frame. We deliver uncompromising precision and quality. With an optimal design and stress distribution, we have achieved a superior frame that is more than 10% lighter than conventional plastic masks and is also durable. In addition, the center pillar is only 7mm wide, the smallest for a two-lens mask. It feels similar to a single-lens mask, without the obstruction of the glabella. It achieves excellent visual characteristics with a high-strength metal frame and an optimally designed flange. ◾️ Metal frame adopted to enable excellent binocular stereoscopic vision For the first time in the world, we have adopted a high-quality metal frame (metal) for all models. Through luxurious machining, we have applied plasma coating or hard anodizing to the high-precision and high-quality frame material, improving the sense of luxury and durability. The material strength unique to the metal frame has allowed us to make the center pillar only 7mm wide, the smallest for a two-lens mask, achieving a feel similar to a single-lens mask without the obstruction of the glabella. This has made it possible to see in 3D the areas that could not be seen with both eyes due to the obstruction of the frame at the edges of the field of view. For this, a large single-lens mask was the only option, but this Biomask has long reigned as the only mask in the world that can provide a wide area of 3D stereoscopic vision. This is an advantage of the metal frame that could only be achieved with a luxurious metal machined frame. Please understand that this is a used item before purchasing. We also have various other items for sale, so please take a look.