Here is a site that may help you decide if you are in market for wrist GPS units. Garmin 305 Forerunner is fantastic compromise between price and offered functions Remember, read descriptions and inform yourself well before you buy:
http://garmin-305-review.com
You can buy Garmin 305 here:
http://www.amazon.com/gp/product/B000CSWCQA/ref=as_li_tf_tl?ie=UTF8&tag=mirjamitropho-20&linkCode=as2&camp=217145&creative=399377&creativeASIN=B000CSWCQA
