Brief description: A prism viewfinder with a built-in exposure meter that replaces the standard waist-level finder. It provides an unreversed, eye-level image and measures light to suggest correct exposure settings. Period: Produced between the 1970s and 1980s. Weight: Approximately 0.50 kg. Size: Approximately 10 x 8 x 6 cm. Material: Die-cast aluminum body with a textured leatherette covering and high-quality glass optical prism. Colour: Satin black with chrome accents. Shipping method: Tracked and insured express courier.