Seiko Prospex Marinemaster Automatic Men's Watch SJE099

The Seiko Prospex Marinemaster SJE099J1 is a refined modern reinterpretation of Seiko’s groundbreaking 1965 diver’s watch, combining vintage-inspired design with elevated craftsmanship, slim proportions, and professional-grade performance. Crafted in a beautifully finished 39.5mm stainless steel case with super-hard coating, this sophisticated diver features a textured light blue dial inspired by gentle ocean waves, paired with a matching blue-gray unidirectional bezel that delivers a clean and elegant maritime aesthetic. Powered by Seiko’s slim in-house 6L37 automatic movement with manual winding capability, the SJE099J1 offers enhanced wearing comfort thanks to its sleek 12.3mm profile while delivering a reliable 45-hour power reserve and high-beat precision. Designed for serious underwater use yet refined enough for daily wear, the watch includes 200 meters of water resistance, LumiBrite hands and markers, a box-shaped sapphire crystal with anti-reflective coating, and the first see-through screw-down case back ever featured on a Seiko diver’s watch. Blending Marinemaster heritage, premium finishing, and modern engineering, the SJE099J1 stands as one of the most sophisticated expressions of Seiko Prospex dive-watch craftsmanship.