Buyer's Remorse

I bought a watch to track my time around Town Lake - not so much for its timing features, but for its solar powered recharging capability and auto-illumination feature. I know, overkill. Not to worry, as the watch is headed back to Target tomorrow. It won't be long before I abandon this attempt at marathon training. And heck, everyone knows I don't have to be anywhere at a specific time. What was I thinking?