Retro look on the newest state of the technology. The Topas consists of the classic Diamant Swan neck frame, made of aluminum 6061, the archetype is the original from 1912, and modern parts. The Topas is the modern classic in the Diamant collection. Visually, the model of 1912 was the godfather. The equipment of this vintage bike is state of the art. A reliable lighting system with hub dynamo and stand light gives you the necessary safety in road traffic. The heavier steel frame was replaced by the lighter aluminum. The reliable V-Breaks are working very well and the shifting runs with the service reduced Shimano Nexus 8-speed hub. The frame is prepared to work with Belt-Drive system. By the adjustable stem it`s possible to get the optimal seat position. As an additional feature the bike disposes a firmly installed AXA Ren II frame lock. The Topas feels fine on the big shopping tour as well as on vaster weekend excursions. On all Diamant frames, Diamant guarantees a 40 year warranty from date of purchase. Attention: The frame size 45cm has 26 inch wheels and 47cm and 53cm have 28 inch wheels.