Bicycle Computers have been used for a long time to provide cyclists with basic information like current speed and distance traveled; but today's bicycle computers can do so much more! Power output, cadence, hear rate, climb, descent, GPS location and elevation are just a few examples of data that bicycle computers can record - and we're not going to lie; we're huge fans of training with data. Once you've completed your training session, some bicycle computers even allow you to upload the data collected during your workout to track your performance improvements.