The Citizen Promaster Professional Diver 1000m BN7020-09E is a purpose-built dive watch engineered for the most demanding underwater environments. This exceptional timepiece boasts a robust titanium case with Duratect DLC and MRK coatings, ensuring exceptional resistance to scratches, wear, and corrosion.  Water-resistant to an astounding 1000 meters, it's capable of withstanding the immense pressures of saturation diving. The black dial features large, luminous hands and markers for optimal visibility in dark depths, while the unidirectional rotating bezel with a secure locking mechanism provides accurate dive timing. Powered by Citizen's Eco-Drive technology, this watch never needs a battery change, making it a reliable and indispensable tool for professional divers.