Amazon.com: Bryton Rider 420E GPS Bike/Cycling Bike Computer. 35hrs Long Battery Life, Bread-Crumb Trail with Turn-by Turn Follow Track. 5 Satellites Systems Support for Extreme Accuracy. : Sports & Outdoors
Amazon.com: Customer reviews: Bryton Rider 530 GPS Cycling Computer (2.6" Display, 530E - Base Model (New Packing))