Edge 605 offers most of the features of the 705 model, with a lower price * Easily measure speed, distance, store workouts, courses, save rides, and more! Color display Built-in basemap MicroSD card slot for adding map detail and storing workouts, courses and saved rides Automatically measures your speed, distance, time, calories burned and altitude Courses let you race against a previously recorded workout, so you can compare your current and past performances over the same ride Auto Lap® automatically starts a new lap each time you pass a specified location or travel a preset distance. Auto Pause® pauses the timer when you slow down or stop and resumes when you speed up again, so you can focus on your ride. Virtual Partner® lets you race a virtual competitor over a specified distance and speed. Features: Heart rate monitor: no Bike speed/cadence sensor: no Foot pod: no Automatic sync (automatically transfers data to your computer): no Garmin Connect™ compatible (online community where you analyze, categorize and share data): yes Garmin Training Center® software compatible: yes Virtual Partner® (train against a digital person): yes Courses (compete against previous workouts): yes Auto Pause® (pauses and resumes timer based on speed): yes Auto Lap® (automatically starts a new lap): yes Advanced workouts (create custom, goal-oriented workouts): yes Simple workouts (input time, distance and calorie goals): yes Pace alert (triggers alarm if you vary from preset pace): yes Time/distance alert (triggers alarm when you reach goal): yes Interval training (set up exercise and rest intervals): yes Customizable screen(s): yes Barometric altimeter: no Unit-to-unit transfer (shares data wirelessly with similar units): no Power meter compatible (displays power data from compatible 3rd party ANT+™-enabled power meters): no * Lacks the wireless feature of the 705 unit. Depending on your needs/wants for more detailed maps, you may requireadditional maps beyond the included base map. Additional mapping, suchas detailed local streets and topo products are available seperately.