Sigma Base 1200 Wired Computer Refurbished. For those who seek just the facts about their rides, the Sigma Base 1200 wired computer is the ultimate Joe Friday. It's a no nonsense, easy to install, easy to use bike computer that provides the essential features so you can be informed about what transpired. It'll give you data like speed, distance, average speed, and ride time plus your info is displayed on a large, easily read LCD screen. Not only that, this model has been refurbished by the experts at Sigma Sports and is guaranteed to be 100% functional just like new!