Seiko Prospex Marinemaster 42mm

This Seiko Prospex Marinemaster SLA077J is a professional-grade Japanese automatic dive watch built for demanding underwater performance. Its 42.6 mm stainless steel case houses a crisp white dial, one-way rotating dive bezel and dual-curved sapphire crystal with anti-reflective coating. At its heart is Seiko’s high-grade Calibre 8L35 automatic movement, providing approximately 50 hours of power reserve and manual winding capability. A screw-down crown, Lumibrite hands and markers, and 300-metre diver’s water resistance reinforce its serious tool-watch credentials. Finished with a stainless steel bracelet, the SLA077J combines robust Marinemaster functionality with a distinctive monochromatic design suited to both professional diving and everyday wear.