• Brand: Omega • Model: Seamaster Professional 300M / 1000Ft. Diver Co-Axial Master Chronometer, Ceramic Bezel, In "Excellent" condition. Like New. All functions work perfectly. "Very Classy, Exclusive and Prestigious Model. Striking and Eye-Catching. From Omega's Most Eye-Catching Series, Seamaster. The Master of the Seas. A Great Investment." • Reference Number: 210.30.42.20.01.001 • Movement: Automatic, Works perfectly. Impeccable at timing. Tested on Timegrapher. > Omega Master Chronometer Calibre 8800, Certified at the Industry’s Highest Standard by the Swiss Federal Institute of Metrology (METAS) > Power Reserve: 55 Hours > Legendary Co-Axial Escapement Co-Axial Escapement eliminates the need for lubrication of the traditional escapement system and prevents sensitivity disorders that will occur due to thickening of the oil over time. Co-Axial Escapement is one of the most serious innovation brought to mechanical watches for 250 years. The friction of the parts in the movement is almost eliminated, minimizing energy losses and providing long-term precision of the movement. > Chronometer (COSC) Certified Movement In the Swiss watch industry, the homeland of watchmaking, when you ask what a Chronometer watch is, the answer you will receive can be a title that diffucult to get. In order for a watch to put the term Chronometer on its dial, it must pass the Official Swiss Chronometer Testing Institute, namely the COSC. To measure the movement and precision of a watch, COSC places it at different temperatures and inspects it for days under varying conditions. The result should be no more than -4 or +6 seconds of deviation per day. Of course, this is not an easy thing to achieve. So much so that only 3% of the Chronometer watch models produced in Switzerland can get a certificate. > Anti-Magnetic Feature The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss). • Type: Diver • Crystal: Sapphire, Scratch free. In Excellent Condition. • Anti-reflective coating on the crystal • Swiss Made, Fully Original • Case & Bracelet: Stainless Steel • Case Back: Transparent, Very Classy. • Bezel: Ceramic, Scratch-free. ZrO2 (Zirconium Oxide) • Dial: Black Wavy Dial , In "Excellent" condition. Spotless. • Very luminious hands and markers • Date Display at 6 o'clock • Case Diameter: 42 mm. (Excl. Crown) • Wrist Size: 18 cm. • Screw-down lockable crown • Crown: Original, Omega signed. • Helium Escape Valve at 10 o’clock "Helium escape valves keep diving watches from getting damaged during saturation diving. Without a valve, these molecules would all try to escape at once during decompression, causing the watch's crystal to break." • Uni-directional Rotating Ceramic Bezel • Folding and Lockable Clasp • Bracelet: Original Omega • Clasp: Original Omega • All functions work perfectly. • The watch is in "Excellent" condition. There is no scratch on the glass. It is as seen in the photos. Very Classy, Exclusive and Elegant model. • Shipping: FREE • Registered and Insured Shipping with Tracking Code in 1-3 days.