Amazon.com: Garmin Edge 520 Bike GPS, Base : Electronics
Computer Cycling/Bike GPS Bundle, Cadence and Speed Plus 520 Edge Garmin for Monitor Rate Sensors/Heart Additional Includes Navigation, and Competing Handheld GPS guaranteed - www.klevering.com
Garmin Edge 520 Plus GPS Bundle | Advanced GPS Bike Computer for Competing & Navigation | Odd Spoke
Garmin Edge 520 Plus Cycling Computer, Black | Bikeinn