Form meets function with Garmins Forerunner 305 next-generation sleek and stylish personal trainer High-sensitivity SiRF Star IIIand153 architecture Alerts for time distance pace and heart rate Receive a detailed post-workout analysis on the PC with included Garmin Training Centerand153 software Dont let its good looks fool you the Forerunner 305 features a high-sensitivity GPS receiver new courses feature and robust ANT wireless heart rate monitor for optimal performance. Designed for athletes of all levels this running partner and personal trainer continuously monitors your speed distance pace and calories burned so you can train more effectively. It tracks your every move with a super-sensitive GPS that even works on tree-covered trails and near tall buildings.