I bought this watch because it resembles a Cartier Must 21 Chronoscaph quartz at a much lower price. The watch is great, however it did not come with an instruction manual, the features are advanced and confusing. Citizen was great about delivery and then sending a manual. The size was a little big and the authorized dealer had to cut the rubber to size it to my wrist, and since it's a rubber/polymer material it doesn't form well and is a little off shape compared to metal or steel type bands that will wrap around the wrist... Overall it's a great looking watch, but a little pricey for what you get.