Omega

Seamaster Aqua Terra GoodPlanet Titanium 38.5mm | Ref. 231.90.39.21.04.001 | 2018 Mint Full Set

$6,950.00

Available

An ultra-lightweight, discontinued titanium masterclass in daily luxury versatility. This 38.5mm Omega Seamaster Aqua Terra GoodPlanet Ref. 231.90.39.21.04.001 is crafted entirely from Grade 5 titanium—weighing an astonishing 90 grams—featuring a crisp white lacquer dial framed by vibrant blued hands and applied indices. A complete 2018 Full Set in mint condition, it is powered by the twin-barrel in-house Co-Axial Calibre 8500 offering a 60-hour power reserve and anti-magnetic performance. Seamlessly blending 150m water resistance with featherlight ergonomics on its solid titanium bracelet, this rare discontinued grail is a true collector's prize.

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Return Policy (Pre-Owned Watches)

We specialize in pre-owned luxury timepieces.
• Returns accepted within 3 days of delivery
• Item must be in the same condition as received
• Must include all original accessories (box, papers if applicable)

All returns are subject to inspection prior to refund approval.

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Seamaster Aqua Terra GoodPlanet Titanium 38.5mm | Ref. 231.90.39.21.04.001 | 2018 Mint Full Set

$6,950.00

Product Specifications

MODEL

Seamaster Aqua Terra GoodPlanet Titanium 38.5mm | Ref. 231.90.39.21.04.001 | 2018 Mint Full Set

REFERENCE NUMBER

231.90.39.21.04.001

YEAR

2018

SCOPE OF DELIVERY

Full Set (Original Luxury Omega Presentation Box, 2018 Dated International Warranty Card, Pictogram Card, GoodPlanet Foundation Literature, Operating Manuals)

CASE DIAMETER

38.5mm Diameter / Featherlight Ergonomic Profile (~90 grams total weight / Grade 5 Titanium)

CASE SIZE

38.5mm

MOVEMENT

Omega In-house Co-Axial Calibre 8500 (Automatic / Twin Barrels / ~60-Hour Reserve)

STRAP MATERIAL

Original Grade 5 Titanium Bracelet with Folding Butterfly Clasp (Full Links)

Physician-Led Vetting

Every piece authenticated in-hand by our medical-grade vetting team.

Authenticated

Verified against brand archive: serial, calibre, dial, and case.

Insured Shipping

Fully insured worldwide delivery via FedEx and UPS Premium.

Honeyrock Guarantee

Authenticity and condition guaranteed in writing on every sale.

Product Description

The Story

The Omega Seamaster Aqua Terra GoodPlanet was born out of an exclusive partnership between Omega and the GoodPlanet Foundation, honoring ocean conservation and environmental sustainability. While traditional steel Aqua Terras are celebrated as the quintessential "one-watch collection," the reference 231.90.39.21.04.001 completely redefines wrist ergonomics by executing both the 38.5mm case and full bracelet in aerospace-grade Grade 5 titanium. Now officially discontinued, this featherlight instrument (~90 grams) bypasses standard blue and black sports watch templates to present a pure, architectural aesthetic tailored for the discerning collector who demands extreme material innovation and under-the-radar exclusivity.

The Craft: Grade 5 Titanium Ergonomics & Blued Steel Contrasts

The 38.5mm Grade 5 titanium case displays exceptional finishing, pairing satin-brushed profiles with mirror-polished lyre lugs. Unlike Grade 2 titanium, Grade 5 can be polished to a high mirror sheen while offering twice the tensile strength of stainless steel at nearly half the weight.

The white lacquer dial is a visual masterpiece, opting for a smooth, porcelain-like glossy surface instead of the standard teak concept lines. It is dramatically elevated by thermally blued applied hour markers and matching arrowhead hands, creating a clean, high-contrast aesthetic that shifts from vibrant electric cobalt under sunlit angles to deep navy in low light. A crisp date window sits gracefully at 3 o'clock.

Turn the watch over to view the engine through the sapphire exhibition caseback: the In-house Co-Axial Calibre 8500. Built with twin barrels mounted in series, it provides a smooth 60-hour power reserve and outstanding chronometric accuracy. Engineered for mechanical endurance, it features a free-sprung balance and silicon hairspring for anti-magnetic reliability, supported by a screw-down crown for a professional rating of 150 meters (500 feet) of water resistance.

Condition & Discontinued 2018 Full Set

This collector-grade GoodPlanet Aqua Terra is presented in true Mint condition. The Grade 5 titanium case, polished bezel facets, and full titanium bracelet show no notable signs of handling or wear, with immaculate sapphire crystals on both sides.

The timepiece arrives as a 2018 Full Set, complete with its original Omega luxury presentation box, outer packaging, operating manuals, Pictogram card, GoodPlanet literature, and the original international warranty card dated in 2018. Fully inspected and backed by our 1-year Honeyrock mechanical warranty, this 38.5mm titanium grail is ready to serve as the ultimate lightweight daily companion.