This camera is a twin-lens reflex camera released in 1951 by Aires Camera Industries. The Airesflex U has various versions depending on the lens and shutter combination. Also, there are some with slightly different body appearances and structures due to the use of parts from other models. The product has a screw hole for a cable release in the position where the shutter button is normally located on the Airesflex U. The shutter is released with a release lever that also serves as the charging lever. The film winding has an automatic stop mechanism, so there is no red window on the back cover. An exposure guide is affixed to the back cover, and the back cover has a removable structure. Both the taking (for photography) and viewing (for viewfinder) lenses are Olympus Zuiko F.C. DOIMER 1:3.5 f=7.5cm, and the shutter is a Seikosha Rapid B, with speeds from B to 1/500 second. Focusing is done with a front plate extension. The body has scratches and dirt commensurate with age. The decorative leather on the front plate has been replaced. There is a gray color unevenness of oxidized aluminum on the aluminum film guide rails, but it probably does not affect photography. The viewfinder feels a little dark, but twin-lens reflex viewfinders are originally of this level. There is wear in the viewfinder assembly, and it is necessary to shake the lid part left and right when opening and closing. In addition to the magnifying loupe, a clear viewfinder (sports finder) is installed. The coating of the Zuiko lenses of the time is prone to aging, so each lens is quite cloudy, and the actual images will have a soft focus quality. The shutter is operating normally at all speeds. There is no abnormality in the operation of the aperture. The automatic stop mechanism is also normal. This camera has greater value as a historical and cultural artifact than as a tool for photography.