Citizen eco-drive chronographs are not always outrageously oversized; there are many that are absolutely tasteful, pleasantly chunky and rich and with very clear accents. These are the ones with well-executed dials, sub-dials and reading panes. Unlike many other watches with all these functions, Citizen ecodrive chronographs do not look too busy because of painstakingly planned-out aesthetics. That’s why a large number of them go easily with both polo-style shirts and business and dinner suits; but there are also ample choices if you want to go flashy. You’ll find many good Eco Drive Chronographs that are significantly larger and funky, are more feature-packed and more versatile in usage. However, all of them are less likely to show wear and tear and stay accurate without needing to change batteries ever!

Also, I've had my watch take a lot of dunkings in the water, whether from reaching over the side of my sailboat, paddling my sea kayak, or swimming with my daughter in the creek. It has had no problems maintaining watertight integrity. I've never tried scuba diving with it to 200m or anything like that, but I certainly trust the waterproofing for casual wear around the water. This is a phenomenal watch. Citizen Calendar Watch are very user-friendly. You just need to manipulate the crown (an easy switch-over procedure) to access functions and set them with a click of a button. The atomic watches even set and update the time and date automatically. Some have alarm, operating in single or multiple time zones.