Garmin Edge 205 GPS

"Know where you're going and know where you've been. The Edge 205 unlocks this basic principle of training. Modern GPS technology accurately tracks speed, distance, time, calories burned, altitude and even tracks your exact position! Overlay your ride course on a computer map and trace when and where you pushed too hard or not enough. Download this data to your PC using Training Center? software and compare it against varying terrain, elevation and altitude for detailed post-ride analysis. Further your training by racing against a competitive Virtual Partner?, set out to beat your time. Large, easy-to-read, waterproof display. Includes bike mount, Training Center? CD, A/C charger and USB PC interface cable"