Don't have a bell? Which cyclist hasn't heard that before? With the Knog Oi, the dream of many pedestrians could become a reality: even cyclists who previously regarded bike bells with indifference for sporting or aesthetic reasons are enthusiastic about the Knog Oi. The Oi doesn’t look like any other bell. On the handlebars, there is hardly more than an elegant metal ring visible, which seems to almost float. Upon closer inspection, one can discover the sound chamber within the aluminum, copper, or brass strip and realize that the bell's attachment to the racing bike also serves as a smart cable guide. This is how innovation awards are won and how cyclists can make themselves heard.