Seiko Prospex x Automatic ft. Land Tortoise Men Formal Tonneau 200m Water Resistant Watch SRPH15K1 SRPH15 SRPH-15 SRPH-15K1 Discover the Seiko Land Tortoise, a rugged field watch with a cushion-shaped case inspired by Seiko iconic Turtle design. Features a practical compass bezel for land navigation, reliable automatic movement, and a durable build perfect for hiking and outdoor adventures. Caliber Number / Movement 4R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Sapphire crystal Luminous LumiBrite on hands and indexes Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with push-button release) Water Resistance 200m / 20 bar Case Size Thickness: 11.7 mm Diameter: 42.4 mm Length: 45.2 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Land Tortoise Bidirectional rotating bezel Screw-down crown Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)