This Citizen Tsuyosa NK5010-51L automatic watch is a men's watch from the beautiful and striking Tsuyosa collection of the Japanese watch brand Citizen. This machine is excited by your wrist movement, so it doesn't have a battery. The Tsuyosa collection is one of Citizen's most popular collections and available in a variety of colorways. This beautiful blue watch can be stored for up to 40 hours before it stops running. + Particularly supple and strong watch strap with links+ Automatic movement with 40-hour power reserve: no batteries required + Water resistant to 5ATM, you can shower with it Improved Citizen Tsuyosa This TSUYOSA Small Second is an improvement on the previous models and not only has a new dial variant, but also additional mechanical caliber. This mechanical calibre with a power reserve of 60 hours offers the wearer extra comfort. The 8322 calibre ensures accurate timekeeping, while the resistant sapphire crystal