Orient Kamasu GMT Launches at $495 Against the Seiko 5 Sports GMT
The Orient Kamasu GMT is Orient's first GMT version of its entry-level diver, sold as the Mako GMT in Japan and the UK. It went on sale in Japan on September 25, 2026 (CONFIRMED: Orient Japan via Gressive; Kakaku.com) and was reported in the US by Gear Patrol and Dappered on October 21, 2026. It has a 42.8mm steel case, a sapphire crystal, 200m water resistance and the automatic F6P22 calibre (CONFIRMED). The black RA-BC0001B30B is $495 at Orient Watch USA against a $625 suggested retail price, as rechecked on November 4, 2026; Gear Patrol notes the $495 matches the Seiko 5 Sports GMT. Regular colours are black, green, orange and blue, plus a 4,000-piece limited-edition graduated blue, RA-BC0005L. Japan prices are JPY 66,000 regular and JPY 70,400 limited, tax included. Sources disagree on how the GMT hand works: Orient Japan's own specification says it is slaved to the hour hand and set via the bezel, while Gear Patrol calls it a caller GMT (UNCERTAIN). We found no end date for the $495 price. Updated November 4, 2026 to reconcile with our Orient Kamasu history.
At a glance
| Detail | Specification |
|---|---|
| References | CONFIRMED: RA-BC0001B30B black (Orient Watch USA); RA-BC0002E30B green, RA-BC0003L30B blue, RA-BC0004Y30B orange, RA-BC0005L30B limited edition (Watchnation listings, Orient UK and Japanese RN-BC equivalents per Orient Japan/Kakaku.com). Green and orange are no longer "likely" |
| Japan release | CONFIRMED: on sale September 25, 2026 as the Mako GMT; JPY 66,000 regular, JPY 70,400 limited edition, tax included (Orient Japan via Gressive; Kakaku.com) |
| Case | CONFIRMED: stainless steel, 42.8mm (41.8mm on the standard Kamasu), 13.4mm thick, 49.5mm lug to lug, 22mm lugs, screw-down crown, solid caseback |
| Crystal and bezel | Sapphire; unidirectional 24-hour bezel, 120 clicks (Orient USA) |
| Water resistance | CONFIRMED: 200m |
| Movement | CONFIRMED: Orient F6P22 automatic, hacking and hand-winding, 40 hours or more; the day-date of the F6922 base is replaced by a date at 3 |
| Bracelet | Stainless steel, 22mm, folding clasp with safety; end links hollow (Gear Patrol) or solid (Orient USA) |
| Dials | Black, green, orange, blue; plus a graduated blue limited edition (RA-BC0005L), 4,000 pieces worldwide (CONFIRMED: Orient Japan, Webchronos, Retail Jeweller); the 400 Japan / 3,600 overseas split is REPORTED by Orient Japan alone |
| GMT hand | UNCERTAIN: slaved to the hour hand and set via the bezel per Orient Japan, Webchronos, Two Broke Watch Snobs and WatchNation; caller GMT per Gear Patrol |
| Price | CONFIRMED (Orient Watch USA, rechecked November 4, 2026): $495 sale price against $625 suggested retail (about 21% off); the two figures are not a conflict. No end date found |
What the Orient Kamasu GMT changes
Gear Patrol, which reported the launch, describes the watch as the Kamasu with a GMT hand and a rehaut added and the day window removed. The case grows from 41.8mm to 42.8mm, and Gear Patrol says the case shape and a fully extended crown guard carry over. Thickness is 13.4mm and lug to lug is 49.5mm, figures that match across Orient's US and UK product pages.
The dial keeps the arrow hour hand, sword minute hand and arrow seconds hand, and Gear Patrol says the rehaut now carries a printed minute track. The GMT hand is red on three of the five debut models, blue on the limited-edition dark blue and gold on the orange. The bezel is a two-tone 24-hour insert, which Orient's US page describes as unidirectional with 120 clicks.
Water resistance is 200m with a screw-down crown and a sapphire crystal, according to Orient and Dappered. Gear Patrol's body text does not name the crystal, so we rely on the Orient pages for that point. Orient's UK site lists the same case as the Mako GMT and does not use the Kamasu name, so expect both names at retail.
Movement: the F6P22 and how the GMT works
The F6P22 is an automatic calibre that Gear Patrol says is based on the existing F6922. Orient's pages give 22 jewels, hacking, hand-winding and a 40-hour power reserve, while Gear Patrol and Two Broke Watch Snobs say "over 40 hours". We treat 40 hours as the safe figure. The day-date of the base movement is gone, replaced by a framed date at 3 o'clock to make room for the second time zone.
Here the sources split, and this matters to buyers. Gear Patrol says the watch has a caller GMT, with an independently adjustable GMT hand, the same type as the Seiko 5 Sports GMT. Orient Japan's specification page (as reported by Gressive), Webchronos, Watchnation and Two Broke Watch Snobs say the hand is slaved to the hour hand, so the second time zone is set only by turning the 24-hour bezel. Orient USA's page does not explain the mechanism, and one customer review on it complains of a fixed GMT hand. We lean on Orient Japan's own specification page, the manufacturer's primary source, which describes the hand as having no standalone correction. That makes the slaved reading our working answer, but we label it UNCERTAIN because Orient's US page is silent and Gear Patrol says otherwise, so check before buying if you want to jump the local hour without moving the GMT hand. Note that the Orient Place blog also says caller, so Gear Patrol is not the only dissent.
Dappered calls the movement in-house. Our Orient Kamasu history covers the original model that this watch builds on.
Price: $495, $625 and the launch window
Orient Watch USA's page for the black RA-BC0001B30B shows a sale price of $495.00 and a regular price of $625.00. That is a discount of about 21%, the figure Gear Patrol gives. Two Broke Watch Snobs calls $495 reasonable for the features and the $625 SRP harder to justify. That is its opinion, not a fact about the watch.
None of the pages we read says how long the $495 price runs, so "launch price" is the press framing, not an announced promotion with an end date. Dappered adds a $445.50 price with the code SAVEBIG, again without an end date. Orient's UK site lists the regular references at £499.99 and the limited edition at £529.99. We have not converted these, because we did not retrieve an exchange rate.
Orient Watch USA still showed $495.00 sale and $625.00 regular for the black RA-BC0001B30B when we rechecked on November 4, 2026. A sale price and a suggested retail price are two different figures, not a conflict between sources. Japanese prices are JPY 66,000 for regular models and JPY 70,400 for the limited edition, tax included, with the watch on sale there since September 25, 2026 (Orient Japan via Gressive; Kakaku.com). Prices can change. If you are comparing budgets, our best watches under $500 and under $1,000 guides cover the alternatives.
Colours, references and the limited edition
Gear Patrol lists black, green, orange and blue as the regular dials and a dark blue as the limited edition. The references are RA-BC0001B30B (black), RA-BC0002E30B (green), RA-BC0003L30B (blue), RA-BC0004Y30B (orange) and RA-BC0005L30B, the limited edition with a graduated blue dial, per Watchnation's listing, with RN-BC equivalents in Japan, per Orient Japan and Kakaku.com.
The green and orange references are confirmed, not merely likely: RA-BC0002E30B and RA-BC0004Y30B appear in Watchnation listings and in Orient UK's related listings, with RN-BC equivalents in Japan. Orient Japan's release, Webchronos and Retail Jeweller put the limited edition at 4,000 pieces worldwide (CONFIRMED). The split of 400 for Japan and 3,600 overseas is REPORTED by Orient Japan alone, so treat it as a single-source figure. The watch went on sale in Japan on September 25, 2026, at JPY 66,000 for the regular models and JPY 70,400 for the limited edition including tax, and the US reports came on October 21. For how this fits the wider line, see our Orient Kamasu history. Two Broke Watch Snobs also quotes its author saying he wants to test one once they are more readily available in the US, which suggests stock may be thin at first. Gear Patrol describes the bracelet as Oyster-style with Y-links and a folding clasp with a safety latch, and says the watch is available now from Orient Watch USA.
Orient Kamasu GMT vs Seiko 5 Sports GMT
Gear Patrol frames the Kamasu GMT as Orient's answer to the Seiko 5 Sports GMT. Worn & Wound's 2022 launch report gives the Seiko SSK series a 42.5mm case, 13.6mm thickness, 100m water resistance, the 4R34 calibre with about 41 hours, and a caller GMT. It expected a price of about $500 at launch. The Orient is 0.3mm wider, 0.2mm thinner and rated to double the depth.
The sources disagree on one Seiko detail. Gear Patrol and Worn & Wound name the 4R34, while Two Broke Watch Snobs names the NH34. We did not fetch a Seiko page, so we cannot say which is right for current models, or what the current Seiko price is. Gear Patrol says the Orient's $495 matches the current SRP of the Seiko, which we could not check independently.
Our reading: on paper the Kamasu GMT offers more water resistance and a sapphire crystal for similar money, but the GMT-hand question above is the one spec that could favour the Seiko. See our Seiko 5 Sports history for the line.
Orient Kamasu GMT and Seiko 5 Sports GMT compared
| Spec | Orient Kamasu GMT | Seiko 5 Sports GMT (SSK) |
|---|---|---|
| Case | 42.8mm, 13.4mm | 42.5mm, 13.6mm |
| Water resistance | 200m | 100m |
| Movement | F6P22, 40h or more | 4R34 (NH34 per one outlet), about 41h |
| GMT type | Slaved per Orient Japan, Webchronos and others; caller per Gear Patrol (UNCERTAIN) | Caller |
| Price | $495 (SRP $625) | About $500 expected at 2022 launch; current price not verified |
Background
The Kamasu line sits in the diver family covered in our Orient history, alongside the Mako and Ray divers, and the Seiko comparison draws on our Seiko history. The 2026 GMT model has its own section in our Orient Kamasu history. For the GMT complication in general, see our Rolex GMT-Master history.Sources: Gear Patrol and Dappered (October 21, 2026), Two Broke Watch Snobs (updated October 22, 2026), Orient Watch USA and Orient UK product pages, and Worn & Wound (June 8, 2022), all retrieved October 29, 2026, with the Orient Watch USA price rechecked on November 4, 2026. Reference, release and limited-edition details were cross-checked against Orient Japan (via Gressive), Kakaku.com, Webchronos, Retail Jeweller and Watchnation. We could not read Orient's corporate press page and found no Kamasu GMT pieces from other major watch outlets. Prices are indicative and may vary by retailer and region.
Frequently Asked Questions
How much does the Orient Kamasu GMT cost?
Orient Watch USA lists it at $495 against a $625 suggested retail price, as of October 29, 2026. We found no statement of how long the lower price lasts. The $625 is the suggested retail price, so the two figures are a sale price and a list price, not conflicting reports.
What movement does the Orient Kamasu GMT use?
The Orient F6P22 automatic, which Gear Patrol says is based on the F6922. It hacks, hand-winds and has a power reserve of 40 hours or more.
How big is the Orient Kamasu GMT?
The case is 42.8mm wide, 13.4mm thick and 49.5mm lug to lug, with 22mm lugs.
Is the Orient Kamasu GMT a true GMT or a caller GMT?
UNCERTAIN. Orient Japan's own specification (via Gressive), Webchronos, Watchnation and Two Broke Watch Snobs say the hand is slaved to the hour hand with no standalone correction, so the second zone is set with the bezel. Gear Patrol says caller, with an independently adjustable GMT hand. We lean on Orient Japan's page, but Orient USA does not confirm either reading.
When did the Orient Kamasu GMT go on sale?
In Japan on September 25, 2026, as the Mako GMT, at JPY 66,000 for regular models and JPY 70,400 for the limited edition including tax (Orient Japan via Gressive; Kakaku.com). US coverage from Gear Patrol and Dappered followed on October 21, 2026.
How water resistant is the Orient Kamasu GMT?
200 meters, with a screw-down crown and sapphire crystal. The Seiko 5 Sports GMT is rated to 100 meters.
Is the Orient Kamasu GMT better than the Seiko 5 Sports GMT?
It has twice the water resistance and a sapphire crystal at a similar price, but the GMT-hand mechanism is disputed. Compare both in person if the second time zone matters.
What colours does the Orient Kamasu GMT come in?
Black, green, orange and blue, plus a limited-edition graduated blue. Orient Japan, Webchronos and Retail Jeweller put the limited edition at 4,000 pieces worldwide. The 400 Japan and 3,600 overseas split is reported by Orient Japan only.
What are the Orient Kamasu GMT reference numbers?
All confirmed: RA-BC0001B30B is black, RA-BC0002E30B green, RA-BC0003L30B blue, RA-BC0004Y30B orange and RA-BC0005L30B the blue limited edition, per Watchnation and Orient UK. In Japan and the UK the watch is called the Mako GMT.
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