Omega's new Seamaster 300m 42MM diving watch with 8800 fully automatic mechanical movement 1: The new Seamaster 300 is upgraded to a transparent bottom (the old model has a solid bottom) 2: The new Seamaster 300 is upgraded to a full ceramic dial consistent with the original 3: The scale and lettering on the upgraded ceramic ring adopt the "white enamel" process, which is not easy to turn yellow and has a glossy finish. 4: The needle shape of the watch is different from the old model, the needle shape is larger, and the reading is clearer