SSK Slim Caseback: Brushed Finish

For builds where a thinner case matters more than a window into the movement, our SSK Slim Caseback: Brushed Finish is perfect for the job. This solid caseback drops a whopping 1mm off the stock display caseback’s thickness (1.75mm thickness vs 2.75mm stock display caseback), tightening up the overall case stack for a lower, more balanced wrist presence while keeping the same water resistance as OEM. Caseback Specifications: Water Resistance: 100m Only compatible with Seiko 5 Sports (SKX Series) SSK GMT Collection: SSK001, SSK003, SSK005 etc with a stock 4R34 movement.