Sennheiser is a German audio company specializing in the design and production of a wide range of microphones, headphones, telephony accessories and aviation headsets for consumer, professional and business applications. For Sennheiser we launched a special campaign around the European Championship in Belgium. Specially selected products featured a unique win-code. When entering the code on the specially developed portal and answering the prize-question the specially developed algorithm would determine if they have won a replica or original European Championship ball.
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