Sold out $2,304 42mm

Formex
Reef GMT
AUTOMATIC GMT COSC 300M BLACK/BLUE
Bicolor Ceramic Bezel with Luminous 24-Hour Scale


Buy it directly from the brand's website.
A Dive watch, in a round stainless steel case, 40.7mm, with a black matte dial, broad arrow hands and applied metal indices, powered by the MONTA Caliber M-23.
This reference is currently in stock and available for direct purchase from the brand. Its price sits close to the median for comparable watches in its segment, neither a premium nor a bargain within that group. The 67 comparable dive watches tracked in this size and price class range from USD 2,005 to USD 4,425.
Diameter
40.7mm
Lug to lug
47.4mm
Between lugs
20mm
Thickness
11.8mm
Movement Type
automatic
Movement Name
MONTA Caliber M-23
Power reserve
56 hours
Water resistance
30 bar
Crystal Type
sapphire
Crystal Description
Flat, beveled, sapphire crystal with 7 layers of anti-reflective coating on the underside.
Its scarcity score of 0/100 is the lowest possible, placing it among the easiest-to-get tracked watches in the catalog. The scarcity score here has moved down around 22 points across the past 179 days. It peaked near a score of 23 in May 2026. That tracks closely with what's typical for Monta's catalog.
This reference has no sell-out history of its own yet. How Monta models usually sell out and restock
No rush
Brand pattern · 24 models
About 92% of this brand's tracked models are currently in stock.
Scarcity rank (in its segment)Top 90%
Price vs segment7% above segment median
Last confirmed:
Tracked since 5/10/25 (540 days).
Available4/27/26
6 months straight
November 2025
Today
Unknown · for 13 days4/14/26
Available · for 1 day4/13/26
Unknown · for 10 days4/3/26
Available · for 45 days2/17/26
Unknown · for 12 hours2/17/26
Available · for 6 days2/11/26
Unknown · for 7 days2/3/26
Available · for 13 days1/22/26
Unknown · for 1 day1/21/26
Available · for 5 days1/16/26
Unknown · for 13 hours1/15/26
Available · for 3 days1/13/26
Unknown · for 12 hours1/12/26
Available · for 13 days12/31/25
Unknown · for 1 day12/30/25
Available · for 43 days11/16/25
Unknown · for 3 hours11/16/25
Currently priced at $2,435.00, down from $2,435.00 on 8/20/26.
$2,435.00 USD9/13/26
Unchanged · 74 days
$2,402.03
At its highest recorded price
$2,435.00
$2,402.03 · down $32.978/20/26
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