Garmin Edge 705 GPS-Enabled Cycling Computer (Includes Heart Rate Monitor) Outdoor Fitness GPS w/ Heart Rate Monitor Large 2.2 in Color TFT Display at 176 x 220 Pixels A microSD Card Slot for Adding Map Detail and Storing Workouts; Allows turn by turn directions with City Navigator software Heart Rate Features, Current, Average, Max, and Heart Rate Zones 2 Lbs (WxLxH) 1.0" x 2.0" x 4.3"