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5-7-2013

“The cardo BK-1 is a communication system between cyclists. Up to three people can communicate up to 500 meters from each other. Connections are made via Bluetooth and voice system ensures safety of cyclists.”

http://www.lexpress.fr/diaporama/diapo-photo/tendances/produit-high-tech/special-tour-de-france-gps-gopro-dix-accessoires-high-tech-pour-cyclistes_1264155.html?p=4