D-1 Ocean

At 44mm, the D-1 Ocean has the presence of a professional diving instrument, balanced by a refined case profile designed for comfort and wearability throughout the day.

Its signature one-piece dished dial curves upward beneath the domed sapphire crystal, creating the smooth, pebble-like silhouette that defines the D-1 collection. The angled lugs and integrated strap system have been carefully refined to help the watch hug the wrist naturally, improving balance and long-term comfort.

Inside is an upgraded Swiss-made Sellita SW200-1 Elaboré automatic movement with a 38–41 hour power reserve, selected for its reliability, precision and long-term serviceability. Each watch is Swiss made and hand assembled by skilled artisans before final testing and quality control.

The case, bezel, buckle and case back are machined from brushed 904L stainless steel — chosen for its superior corrosion resistance and deeper lustre compared to industry-standard steels. More difficult to machine and finish, 904L requires additional time and precision, but the result is a case designed to wear beautifully over many years of use.

The satin-finished ceramic bezel rotates with a precise 120-click action, while the screw-down crown and updated six-screw case back help ensure 300m water resistance and add a more utilitarian feel.

Designed as a true modern tool watch, the D-1 Ocean feels equally at home underwater or on dry land — built for regular use and designed to wear beautifully over time.

Over time, it is designed to become familiar in the best possible way — a watch reached for instinctively, worn often and relied upon daily.

Produced in an edition of 300 pieces, each D-1 Ocean comes fitted with an Arctic White FKM rubber strap alongside a second integrated strap selected from a curated range. Both feature brushed 904L steel hardware and quick-release spring bars, allowing the watch to adapt easily to different environments and occasions.

Shipping and Returns are on us. No questions asked 30 days money-back guarantee.

Local duties and taxes are included in the price advertised for deliveries to the UK, US, Australia, Belgium, Canada, Czechia, Denmark, Finland, France, Germany, Hong Kong, Ireland, Isle of Man, Italy, Japan, Jersey, Malaysia, Netherlands, New Zealand, Singapore, Spain, Sweden, Switzerland, & United Arab Emirates.

For more information see our shipping policy.

All Aera watches come with have a two-year limited warranty from the date of purchase. You can easily extend the warranty for one additional year by visiting the Warranty page and registering your watch. We undertake to repair, free of charge, including shipping, any problem with the functions of the watch that result from defective manufacturing. If there is mechanical failure of the movement within the warranty period, rectification will include reseal and complementary refresh of the case.

For more information see our refund policy.