It's a very cool and clever module.  If you walk a lot, I recommend it.  It's about $49.95, which in my opinion is expensive when compared to simple digital pedometers you can buy at sport stores.  But, the plug and play Visor "coolness factor" and the historical graphs certainly up the ante.   The Hagiwara Step Keeper Pedometer module is certainly a unique addition to your collection of modules, and if you are an exercise fan, it's a winner.