Garmin Edge 25 Cadence Bundle COMPACT - Weighing only 25 g (0.9 oz.), Edge 20 and Edge 25 are the smallest cycling GPS computers in the world, making them perfect for travel GPS +GLONASS - Acquire satellites quickly to track how far, how fast and where you ride - even under tree cover. The Garmin Edge 20 and Edge 25 are the first in this size and price range to add GLONASS CONNECTED FEATURES - Edge 25 allows you to instantly share details of your ride with friends and family via social media by pairing a compatible device with Garmin Connect Mobile. Share your rides and training activities in real time with live tracking ANT+ COMPATIBLE - Pair Edge 25 with a heart rate monitor, cadence sensor and speed sensor to get the most out of your rides. GARMIN CONNECTTM - Download courses, view personal records and analyze post-ride stats with Garmin Connect to get the most out of your training.