I bought the wrist GPS to get current speed while running.
But favorite feature, so far, is simple mileage.
Formerly I arranged my long runs so that it was easy to calculate mileage. Now I can run as the spirit moves me and the gizmo will just tell me the distance.
Not bound to any particular route,
I'm free to run till my legs give out.
If I can't take a step to save my life,
I use my cell phone to call my wife.