Citizen Promaster BN1024-01Z Men's Watch • Eco-Drive Solar Movement • Sapphire Crystal

The Citizen Promaster BN1024-01Z is a professional diver's watch built for demanding underwater use. As part of the acclaimed Promaster series, it combines robust engineering with a bold design, tailored for men who set the highest standards for their timepiece. The round stainless steel case, 46 mm in diameter, houses the light-powered calibre E365 – an Eco-Drive movement that requires no conventional battery and offers a power reserve of 365 days at full charge.

The black strap is made from BENEBiOL, a plant-based polyurethane that is exceptionally resistant to hydrolysis and therefore ideal for use in and around water. The watch is designed for saturation diving and features a helium escape valve as well as water resistance to 30 bar. The anti-reflective coated sapphire crystal protects the red dial with its distinctive baton indices, while the rotating bezel completes the classic diver's watch look. The case back is engraved with a diving helmet motif.

Key Features of the Citizen BN1024-01Z

• Eco-Drive Calibre E365 with light-powered solar drive and a power reserve of 365 days at full charge – no battery replacement required.
• Professional diver's watch with water resistance to 30 bar, helium escape valve for saturation diving, and a rotating bezel.
• Anti-reflective sapphire crystal with a scratch-resistant surface, paired with a scratch-resistant stainless steel case for lasting durability.

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
  Important: Screw the crown down firmly beforehand!!!
• Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
• Avoid: Harsh chemicals, perfume, cosmetics and heat.
• Leather straps: Do not soak, clean only slightly damp and allow to dry away from heat.
• Water resistance: Do not wear in the shower or bath, have it tested annually.
• Battery (quartz): Have a depleted battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store the watch separately, not in direct contact with other jewellery (risk of scratching).
• Place mechanical watches on a flat surface when winding, do not leave the crown pulled out.