<p>A lot of guys here have Ironman watches: they are relatively cheap and fairly durable. I have a nike sports watch that I wear on a day-to-day basis. It has a chronograph, and I dont really have to worry about scratching it up. If your looking for something more ‘dressy,’ pretty much anything goes. Im not 100% sure about the regs, but I believe the band can be black, silver, or brown (leather).</p>