I upgraded to the eco-drive from a watch that recharged by wrist motion. So far I'm a lot happier with the eco-drive. It holds a charge a lot longer, so it's not a problem to leave it unworn for a day or two. I didn't like the green military style band on this one, but it was easy to swap for a leather 20mm band. The stock band was a tad small for my wrist. I would expect a lot of men would need to swap it. The numbers look big in the picture, and they're big on the watch. I like the big numbers, others might not.