The extremely small Polar G5 GPS Sensor provides accurate speed and distance measurement for a range of outdoor sports. It is light and easy to wear in the armband pocket. After training you can see your route on a map with compatible software/web service.
Ultralight (34 g) and small (39x64x12mm)
Measures speed/pace and distance
Records accurate GPS positioning data
Easy to wear in a soft and flexible armband (26 g)
Rechargeable (20 hour life) via micro USB
Buy Polar GPS Sensors and Spares from Chain Reaction Cycles, the online bike store for every style of cycling.