The Orient Mako GMT RA-BC0005L30B is the GMT model in Orient’s Mako sports line, limited to 4,000 pieces. It is a 42.8 mm steel watch for a second time zone, not the 41.8 mm Mako / Kamasu case and not a dress watch.
The dial is a blue gradient, lighter through the centre and darker toward the edge. Applied luminous markers, a triangle at 12, and a date window at 3 o’clock. There is no day display. Silver hour and minute hands, a blue seconds hand, and a blue arrow-tipped 24-hour hand. The dial reads Orient Automatic, GMT, and Water Resistant 20 bar. The bezel is a 24-hour scale, blue on the upper half and grey on the lower, in a black-plated coin edge. It is not a 60-minute dive timer.
Calibre F6P22 is Orient’s in-house automatic for this model: hand-winding, hacking seconds, 22 jewels, power reserve over 40 hours, rated +25 to −15 seconds a day. The 24-hour hand is linked to the hour hand. It does not jump on its own. Set local time on the normal hands, then turn the unidirectional bezel so the 24-hour hand points at the hour you want to track. That is a caller-style GMT, useful for a home time zone or a city you phone, not a traveller GMT that shifts the hour hand by itself.
The case is stainless steel, 42.8 mm across, 49.5 mm lug-to-lug, and 13.4 mm thick, with 22 mm lugs. Orient lists the weight at 177 g. Sapphire crystal, screw-down crown, screw case back, and 200 m / 20 bar water resistance. Orient does not class it as an ISO dive watch. The rating is for swimming and surface water, not a scuba certification, and the bezel is there for the second time zone rather than elapsed dive time. The bracelet is SUS316L steel with a trifold deployant clasp, push-button release, and a safety latch. Orient also lists magnetic resistance to JIS Type 1 (4,800 A/m or higher) and a wrist range of about 140 to 200 mm.
The catalogue case back is engraved Limited Edition and 0000/4000. That 0000 marking is a sample engraving in the product photo, not the serial of the watch we send. The same case back is marked Made in Thailand, sapphire crystal, stainless steel, and water resistant 20 bar. This is current non-Star Orient production. Orient is a Japanese brand. The calibre name is F6P22.
Who it suits
Choose this if you want the Mako sports look with a second time zone and a 42.8 mm case. If you want the smaller 41.8 mm day-date diver with a minute bezel, the Orient Mako RA-AA0824L39B is the closer match. The rest of the sports line is under Orient divers.
Specifications
- Reference: RA-BC0005L30B (family RA-BC0005L)
- Edition: 4,000 pieces. The catalogue case back shows sample engraving 0000/4000
- Movement: Orient calibre F6P22, automatic, hand-winding, hacking, 22 jewels
- Power reserve: over 40 hours
- Accuracy: +25 to −15 seconds per day
- Functions: hours, minutes, seconds, date at 3, 24-hour hand. No day window
- GMT: 24-hour hand linked to the hour hand. Second zone is read from the bezel
- Case: stainless steel, 42.8 mm, 49.5 mm lug-to-lug, 13.4 mm thick, 22 mm lugs
- Bezel: black-plated, unidirectional 24-hour insert, blue and grey
- Crystal: sapphire
- Crown and case back: screw-down crown, screw case back
- Water resistance: 200 m / 20 bar. Not an ISO dive watch
- Bracelet: SUS316L, 22 mm, trifold clasp with push button and safety latch
- Weight: 177 g
- Magnetic resistance: JIS Type 1, 4,800 A/m or higher
- Brand: Orient, a Japanese brand. Pictured case back marked Made in Thailand
Questions buyers ask
What movement does the Orient Mako GMT RA-BC0005L30B use?
Orient calibre F6P22, an in-house automatic with hand-winding and hacking. It has 22 jewels and a power reserve of over 40 hours. It is not the F6922 used in the 41.8 mm Mako and Kamasu.
How does the GMT work on the RA-BC0005L30B?
The blue 24-hour hand moves with the hour hand. You cannot set it separately. Turn the 24-hour bezel so that hand points at the hour you want to follow. Local time stays on the normal hour and minute hands. It tracks a second time zone. It is not an independently jumping traveller GMT.
Is the RA-BC0005L30B a limited edition?
Yes. Orient lists 4,000 pieces. The case-back photo on this page is engraved 0000/4000. Treat that as a catalogue sample marking, not the number on the watch we send.
What size is the RA-BC0005L30B case?
42.8 mm across, 49.5 mm lug-to-lug, 13.4 mm thick, 22 mm between the lugs. That is a different case from the 41.8 mm Mako / Kamasu, and it is not a 40 mm Mako.
What is the water resistance of the RA-BC0005L30B?
200 metres / 20 bar, with a screw-down crown and a screw case back. The dial reads Water Resistant 20 bar. Orient does not rate it as an ISO dive watch. The bezel is a 24-hour scale, not a dive timer. Suitable for swimming. Not a tool for scuba.
Where is the Orient Mako GMT made?
Orient is a Japanese brand. The case back in these listing photos is marked Made in Thailand. The watch we send is current production and carries that Thailand marking. This is not an Orient Star.
Where can I buy the Orient Mako GMT in Australia?
This RA-BC0005L30B is in stock at Chronospride and ships Australia-wide on eligible orders. It is inspected before dispatch. Cover on this sale is Chronospride’s 12 months warranty, handled by our team. Details are on our authenticity and warranty page.
Listing photos may show an earlier example marked Movement Japan or Made in Japan. The watch we send is current production and is marked Made in Thailand.
Authentic stock, inspected before dispatch. Free shipping Australia-wide on eligible orders. Covered by Chronospride’s 12 months warranty, handled by our team. See our authenticity and warranty page.
| Case-Size | 42.8mm |
|---|---|
| Band-Width | 22mm |
| Lug-Width | 22mm |
| Lug to lug size | 49.5mm |
| Case Thickness | 13.4mm |

















