Unleash Your Ride. Magellan's Cyclo 315 models are powerful cycling GPS computers that record up to 240 hours of riding history and deliver outstanding navigation and sensor support. Whether you tour, ride for fitness, compete or go off trail Cyclo 315 models will improve your riding experience. Cyclo models are rugged and water resistant to IPX-7 standards. All have a user-friendly interface built into a 3" color swipe anywhere touchscreen with large control buttons making it easy to move through screens when gloved. Magellan's Cyclo 315 models can help you determine if you're shifting at the wrong time or if you're in a poor gear position by reading and recording shifting information from compatible Shimano Di2 electronic road bicycle shifting systems with Di2 wireless unit (SM-EWW01) and D-Fly. Also displays battery status and alerts or warnings.In addition to Di2, Cyclo 315 models support over 130 ANT+ heart rate monitors, speed and cadence sensors. Cyclo 315 models are pre-loaded with a complete USA road network for audible and turn by turn navigation and Open Street Maps (OSM) crowd source trail data showing cycle lanes, cycle tracks and bike shop POIs. Discover new cycle routes and bike trails or record and share your own. Optimize your ride by creating up to 6 custom cycling profiles. Once created Cyclo 315 models will show routes specifically designed for your riding equipment and style. For mountain biking profiles the routes suggested will even show what % of the route is on dirt vs paved roads.Cyclo's Surprise Me displays different routes (up to 3) after the rider has entered either distance or time criteria. Each route will show elevation gain and difficulty making it perfect for any rider looking for a graded loop. Shake N Share provides device to device sharing with 315 or 515 models and after connecting to your computer tracks, segments and riding data can be uploaded to magellancyclo.com or any app accepting .GPX or .FIT files.