Citizen BN0191-80L Men’s Only Time Watch From Citizen Promaster Collection. Steel case with a diameter of 43.5 mm, screw-locked back and crown, unidirectional rotating bezel, blue dial with applied hour markers and high-luminosity hands, and mineral glass. The bracelet is made of steel with a safety clasp. Watch With 20 Atm Water Resistance And Eco-Drive Movement With 6 Month Power Reserve. Functions: Professional Diver’s Time Only Iso 6425