How many features can we cram in to one device with the fewest number of buttons?
I'm a runner and I've used numerous GPS watches and they all share a common defect: too many features and too few buttons. Runners care about two-and-a-half things: distance, time, and pace/speed. All the other fancy capabilities are worse than distraction: by overloading the few available buttons with context-sensitive functions you make the watches very hard to use, especially while in motion.
I get it: software is cheap and buttons are expensive. Also, yes, I know it's easy for your designers and engineers to use the watch. But seriously, focus on core functionality and discard the rest.
Here's the Nike+ SportWatch GPS Powered by TomTom (Black/Volt), currently the best-selling GPS watch on Amazon with a list of features, most of which are not useful:
Technical Details- Water resistant Nike+ SportWatch features TomTom GPS for accurate speed and distance information, indoors or out--even if the GPS signal gets interrupted
- Track your time, distance, pace,
heart rate (with optional sensor), and calories burned; view your mapped route with pace data/changes in elevation on Nikeplus.com- Rechargeable lithium polymer battery charges via USB, provides eight hours of run time with the GPS and sensor both turned on, up to 50 days of standby power
- Join challenges and connect with friends as a member of Nikeplus.com--view/share routes, find popular running areas, share activity on Facebook or Twitter- Personal coaching features help keep you at your best--reminds you to run, stores your run history, and remembers your personal records
