The date appears in a window at 3 0’clock. The 24-hour GMT scale is printed in orange on the polished, dark blue bezel; the wearer can track the time in a second time zone using the scale and the central GMT hand. The brushed and polished stainless steel case, which also includes a diving-friendly helium-release valve at 10 o’clock, is a generous 43 mm in diameter and water-resistant to 600 meters. It features a domed sapphire crystal with nonreflective treatment on both sides. There is also a scratch-resistant sapphire window in the caseback, with “GoodPlanet Foundation” engraved around its periphery and offering a view of the watch’s movement. The movement, Omega’s co-axial Caliber 8605, features automatic winding and a three-level co-axial escapement with an Si14 silicon balance spring.
The watch is offered with either a stainless steel bracelet (price: $8,100) or an ocean-inspired blue rubber strap ($8,000). Omega has committed a portion of the proceeds from sales of each Seamaster Planet Ocean 600M GoodPlanet watch to the Foundation’s project to preserve the mangroves and seagrasses in Southeast Asia and educate the local populace about safeguarding these natural resources.
This article was originally published on September 2, 2014, and has been updated.