Cardo scala rider twitter page cardo BK-1 Google+ page
Cardo scala rider facebook page
Cardo Systems YouTube Channel

“The cardo BK-1 is a Bluetooth communication and entertainment system for cyclists that is based on their motorcycle helmet communication system.  It is lightweight, waterproof and dustproof, will fit virtually all bicycle helmets and is equipped with hovering speakers and omni-directional noise-cancelling microphone.”