The Citizen Eco-Drive Men's Diver Watch is a big durable chunky watch that's tough to beat in the water.Most dive watches have weaknesses...quartz divers need battery changes, and then require pressure testing to ensure they remain waterproof. Automatic [self winding] divers need frequent adjustment to stay on time, and the screw-down crowns are vulnerable to cross-threading and breakage.Neither of these things are true of the Eco-Drive. It never needs a battery change and will only need adjustment to correct the date every few months. In any case, the crown on this watch is designed in such a way that cross-threading is almost impossible.The watch face is very readable, the the blue-toned lume is very bright . I regard this watch as too large to wear as an everyday piece, but it's not out of the question if you want to make a statement. The watch comes with a large zippered case and an extension strap for wearing over wetsuit sleeves, but even without the extension, the comfy rubber strap will fit a 9" wrist. If you need a serious dive watch, this on should be on your shortlist.