Seiko Prospex x Automatic ft. Asia Pacific Exclusive aka Mini Samurai (Limited Edition of 2,500 Pieces) Men Diver Round 200m Water Resistant Watch HBB004K1 HBB004 HBB-004 HBB-004K1 Seiko Prospex HBB003 and HBB004, Asia-Pacific limited editions of 2,500 pieces each. Featuring 41.7mm stainless steel cases with hardlex crystal and 200m diver water resistance. Powered by the automatic Caliber 4R35 with a 41-hour power reserve. The angular Samurai-style cases frame vibrant yellow and orange dials inspired by coastal sunsets, completed with LumiBrite hands and a unidirectional black bezel. Caliber Number / Movement 4R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Hardlex crystal Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with secure lock, push-button release with extender) Water Resistance 200m / 660ft diver Case Size Thickness: 12.3 mm Diameter: 41.7 mm Length: 49.5 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Asia Pacific Exclusive aka Mini Samurai (Limited Edition of 2,500 Pieces) LIMITED EDITION on the case back Serial number engraved on the case back Magnetic resistance (4,800 A/m) Unidirectional rotating bezel Screw-down crown Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)