The Sigma bike computer meets all my requirements, has no unnecessary frills. For my needs, just right! Price-performance super! When programming I was the enclosed service line in the form of about 1 square meter Papierfladens little put off (mainly English language!), But on the Sigma website were a few short movies to present, and then everything was suddenly clear as day, the programming was only a breeze! I can only recommend the RC!