There is a solid screw-down case back with a center medallion engraved with 'SEAMASTER,' the Seamaster logo, and 'PLANET OCEAN' on the perimeter.
It has a screw-down protected winding crown, and a helium escape valve at 10 o'clock on the left-side case band. It has an integral Omega stainless steel link bracelet, and a domed sapphire crystal with the anti-reflective coating on both sides. This is a stainless steel Omega Seamaster Co-Axial Planet Ocean 2200.50.00. More about Seamaster Planet Ocean SS/SS 45.5MM