Garmin vívofit Fitness Band: Start each day with a personalized and attainable goal. Designed to be worn 24/7, this water-resistant fitness band has a battery life of over one year and reminds you to move throughout the day. It is also compatible with select heart rate monitors (sold separately), so you can accurately track calories burned during everyday activities and your more intense workouts.
Purchased for my wife for step tracking. Had no problem with it as far as that functionality goes and liked the idea of the long battery life. Syncing data to the web site through the Gamin app was ok, not as easy as it could have been to set up. The reason I give this a one star review is that the band design stinks. It does not lock on as well as a watch style clasp would. We think my wife bumped it on something at work and it fell off. She didn't realize it at the time and it was lost, never found it again. From what I've read online looking for ways to try to track it down this is not that uncommon. Won't buy another tracker that doesn't have a watch style clasp.