Cardo, known for its helmet-mounted intercom systems for motorcyclists such as the Scala Rider G4 we sampled, has now introduced the first such system for bicyclists. The BK-1 will make its official debut at the Sea Otter Classic cycling festival in California that kicks off on April 19. The BK-1 can link two or three riders at distances of up to 1,600 feet and lets users pair up with MP3 players, GPS devices, and smartphones.
