Omega Pre-owned Seamaster Diver 300M. Condition: Excellent — used (very good). Rank A Used: a few traces of usage; overall in very good condition. Seller ranking: Rank A. Glass, dial, hands, case, bezel, crown, case back and bracelet scratches: insignificant. Band stains/dirt: insignificant. Damage ranking: crown dent insignificant. Before purchasing, please refer to the images for the exact condition of the item. ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) Key attributes: Black | Stainless steel | Water resistance 300 m. ([europeanwatch.com](https://www.europeanwatch.com/watch/omega-21030422001001-seamaster-diver-300m-co-axial-master-chronom-68090)) | Sapphire crystal. ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) | Co-Axial Master Chronometer (Caliber 8800). ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) | Self-winding (automatic) movement. ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) | Stainless steel bracelet. | Black wave dial with sword hands and stick/dot indexes. ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) | Black ceramic bezel. ([watchbase.com](https://watchbase.com/omega/seamaster-diver-300m/210-30-42-20-01-001)) | Round stainless steel case. | Dimensions & fit: Regular fit | Composition & care: Stainless steel | Ceramic (bezel) | Sapphire crystal (glass) | Wipe with a soft cloth. Avoid exposure to strong chemicals. Have the movement serviced by a qualified watchmaker at regular intervals. Before purchasing, refer to the images for exact condition.