Citizen Promaster Sea BN0266-07E Men's • Eco-Drive Solar • Sapphire Crystal

The Citizen Promaster Sea BN0266-07E is a professional dive watch from Citizen's Promaster Marine collection, designed for men who demand the highest standards of reliability and technical performance underwater. It is powered by the advanced Eco-Drive calibre E118, which converts light energy into electricity, eliminating the need for battery replacements. The silver-toned stainless steel case measures 40.6 mm in diameter and a slim 11.69 mm in thickness — remarkably compact for a dive watch with 200 metres water resistance to ISO 6425.

The black dial with luminous hands and hour indices ensures excellent legibility even in poor visibility conditions. The unidirectional rotating dive bezel with black IP coating allows precise timing of dives. The sapphire crystal with anti-reflective coating provides reliable scratch protection for the dial. The black polyurethane strap complements the sporty, all-black aesthetic and is secured by a pin buckle. Weighing just 86 g, the watch sits comfortably light on the wrist.

Key Features of the Citizen BN0266-07E

• Eco-Drive Solar (Calibre E118): Light-powered quartz movement requiring no battery changes — consistently reliable and sustainable.
• 200 m Water Resistance (ISO 6425): Professionally certified dive watch with screw-down crown and screw-down case back.
• Sapphire Crystal with Anti-Reflective Coating: Maximum scratch resistance combined with optimal legibility in any lighting condition.

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe the 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 while showering or bathing, have 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.