The Citizen Automatic Yellow NJ0150-81Z has a 40 mm wide and 11.7 mm thick stainless steel case. A silver-colored steel bracelet is attached to the case. Beneath the sapphire glass, the dial is can be found and the date has a cyclops lens. The automatic 8210-caliber movement has 21 jewels and oscillates at 21,600 times per hour. It has a power reserve of approximately 40 hours. The Citizen NJ0150-81Z watch has a water resistance class of 50m/5atm, which means it has limited water resistance (swimming is not recommended).