Citizen Tsuyosa Men's Watch (NK5010-51X) – WatchClick,Citizen Tsuyosa Men's Watch (NK5010-51X) – WatchClick,Citizen Europe is launching three Tsuyosa models with a sub seconds display. The NK5010-01H has a gray dial and leather strap, the NK5010-51L has a blue dial and bracelet, and the NK5010-51X,Citizen Automatic NK5010-51X Tsuyosa Watch,Citizen Tsuyosa Small Second Stainless Steel Textured Green Dial Automatic NK5010-51X Men's Watch