Engineered for serious diving and built with precision, the SLA079 represents Seiko’s pinnacle in dive watch performance. With its formidable construction, advanced automatic movement, and professional-grade features, this Marinemaster is a bold statement of strength and reliability.

Key Features

Professional Dive Capability

• 42.6mm stainless steel case with a commanding presence

• Dual-curved sapphire crystal with inner anti-reflective coating for clarity at depth

• Unidirectional rotating bezel and screw-down crown for true dive utility

• Water resistant to 300 meters (1000 ft) for saturation diving

Mechanical Performance

• Caliber 8L35 automatic movement, hand-assembled at the Shizukuishi Watch Studio

• 28,800 vibrations per hour (8 beats/second) for smooth timekeeping

• 50-hour power reserve with 26 jewels

• Accuracy of +15 to -10 seconds per day

• Stop second hand function and date display

Built for the Elements

• LumiBrite on hands, indices, and bezel ensures exceptional low-light legibility

• Screw case back and magnetic resistance of 4,800 A/m

• Stainless steel bracelet with three-fold clasp, secure lock, push-button release, and diver’s extension for maximum safety and comfort

The Seiko Prospex Marinemaster SLA079 is a purpose-built tool for the depths—crafted with the precision, durability, and heritage that defines Seiko’s legacy in professional dive watches. Ready for the ocean, yet striking on land.