Omega Seamaster Diver 300M "Black Black"

The Omega Seamaster Diver 300M "Black Black" is a 43.5mm professional dive watch defined by its bold, all-ceramic construction. The case, bezel, wave-pattern dial, crown, and helium escape valve are all crafted from black ceramic, giving the watch a distinctive, uniform, and sculptural appearance. Even the lume plays into the aesthetic, with anthracite Super-LumiNova keeping the look consistent in daylight while glowing in the dark.
Key Features
Dial: Black ceramic with a laser-engraved wave pattern, black PVD skeleton hands, and raised indices filled with Super-LumiNova. A lumed dot marks the 12 o'clock position.
Case: 43.5mm zirconium oxide black ceramic, lighter than stainless steel, highly scratch-resistant, hypoallergenic, and non-magnetic. Case thickness is 14.5mm.
Bezel: Uni-directional rotating black ceramic bezel with a tone-on-tone diving scale in laser-ablated finish, displaying the scale in polished positive relief.
Movement: Self-winding Co-Axial Calibre 8806, certified as a Master Chronometer by METAS, resistant to magnetic fields up to 15,000 gauss, with a 55-hour power reserve.
Strap: Integrated black rubber strap with a black ceramic tang buckle.
Water Resistance: 300 meters (990 feet), with a screw-down crown at 3 o'clock and a conical helium escape valve at 10 o'clock.
Crystal: Domed sapphire crystal with anti-reflective treatment on both sides. The sapphire caseback offers a clear view of the decorated movement and rotor.