Citizen Promaster Professional Diver 300m BN1024-01E Men's • Eco-Drive Sapphire Crystal • 30 Bar Water-Resistant

The Citizen Promaster BN1024-01E is a professional diver's watch built to meet the highest demands for functionality and durability. As part of the renowned PROMASTER line, which has stood for professional performance for over 35 years, this model impresses with its light-powered Eco-Drive calibre E365 and a power reserve of 365 days on a full charge. The 46 mm stainless steel case houses a deep black dial inspired by the darkness of the ocean depths, transitioning to an even deeper shade at the 6 o'clock position.

The BN1024-01E is designed as a saturation dive watch and features an additional helium escape valve along with water resistance to 30 bar (300 metres). The strap is made from BENEBiOL, a plant-based polyurethane that is exceptionally hydrolysis-resistant and environmentally conscious. The rotating bezel, the crown with crown guard at 4 o'clock, and the distinctive hands and indices are carried over from the popular predecessor model BN0156-05E. The anti-reflective coated sapphire crystal ensures optimal legibility underwater.

Key Features of the Citizen BN1024-01E Watch

• Eco-Drive Calibre E365 with a 365-day power reserve, fully light-powered with no regular battery replacement required
• Professional diver's watch with 30 bar water resistance, helium escape valve and unidirectional rotating bezel for safe use to 300 metres depth
• Anti-reflective sapphire crystal and stainless steel case for maximum scratch resistance and longevity

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: Aggressive agents, 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 checked annually.
• Battery (quartz): Have a depleted battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store watch separately, not directly with other jewellery (risk of scratching).
• Set mechanical watches down when winding, do not leave the crown pulled out.