Digital and Electronic Device Design Citylite Interlocking bicycle lights by Lars Beck The Citylite bicycle light combines a simple and elegant design with easy handling and outstanding efficiency. It is powered by two lithium coin cells that are connected in parallel - a technical detail that simply doubles the batteries life span. The light angle is 220° so that the cyclist is visible even from the sides, a feature that secures a particularly safe ride. It can swiftly be glided on and off the bicycle without brackets or tools. Form and function are united in Citylite in an exemplary manner through a straightforward design that is well-thought-out down to the last detail