This is the original bezel for the Seiko Prospex Turtle Diver. Related case numbers: 4R36-04Y0, 4R36 O4YO Related models: SRP777K1, SRP777J1, SRP777P9, SRP777 Product Specifications Brand Seiko Bezel ref. 86016595 Color Black Outer Diameter 42 mm Inner Diameter 35 mm Inner Diameter Insert 32.2mm This bezel is manufactured by Seiko and matches the original specifications for the mentioned compatible models and case numbers. It is engineered to fit the case construction precisely, ensuring smooth rotation and perfect engagement with the click-spring and bezel gasket. The finish and alignment are identical to the factory design, preserving the original look and functionality of your watch. Choosing an OEM Seiko bezel guarantees correct fit, water resistance integrity, and the authentic Seiko quality that aftermarket bezels cannot replicate.