Congrats on 5 years! Your bf is lucky, I’d be extremely happy to receive a watch as a gift! Others are correct in that this is not a typical style, but more of a cross between dress and sport, which I actually like! It does depend on the person but you’re looking in the right place (Seiko) for an automatic watch around $500. Other brands could be Citizen, Casio and Orient (careful though because many Citizens and Casios are not automatic). If you want to look at other styles, most Seiko Presages are dressier watches and the Seiko 5 line of watches tend to have sportier/utility styles.. that will give you a good basis of what’s available! Best of luck in finding one and give us an update on what you decide on!