Sigma BC 1009 Wired ComputerThe cycling computer has a large display and a low battery consumption with an indicator for low battery level. When in stand by it displays clock and the model name of the computer. The computer has a backup function so it wont loose pre-set data and total values when changing the battery. The computer is PC ready which means it can be connected to a PC through an optional Sigma docking station (not included). Then you can quickly and easily download the totals and daily stats to your PC. Furthermore, with this option, you can also quickly and easily set up your BC 1009 cycling computer.