Garmin Edge 305 GPS with Cadence Sensor-The Personal Trainer
Whether you're prepping for your next century ride or want a more accurate way to measure your performance on the trails, take your training to the edge with the Garmin Edge 305 CAD GPS system having a cadence sensor which includes a self-calibrating, wireless speed sensor so you can monitor your pedaling cadence as you ride and measure your pedaling strokes per minute to the Edge and this 305 CAD GPS Navigator will help you to always know where you are and how far you've gone.I have got the best deal of  Garmin Edge 305 GPS at buyelect.com.