Casio G-Shock Frogman GWF-D1000 May Return With a New Black Colorway and Metal Core Band
Casio’s legendary G-Shock Frogman GWF-D1000 could be getting its first new colorway in years, with a leaked model reference suggesting a fresh version may arrive as soon as September.
The rumored model carries the reference number GWF-D1000BC-1JF, and early details point to a black-based design with a positive LCD display. If accurate, this would mark the first new GWF-D1000 variant since 2019, giving Frogman fans a long-awaited update to one of Casio’s most respected professional dive watches.
One of the most interesting details is the reported switch to Casio’s metal core band. Since its debut in 2016, every GWF-D1000 model has used a carbon fiber insert band. The new “BC” model code strongly suggests a different approach, as Casio has used similar naming on other watches equipped with metal core bands.
A metal core band combines the durability and flexibility of resin with reinforced metal components inside the structure. This could give the new Frogman a more premium feel while keeping the rugged G-Shock identity intact.
The rumored weight also supports the possibility of a metal core band. The standard GWF-D1000 is listed at around 141 grams, while the leaked details suggest the new GWF-D1000BC-1JF could weigh about 170 grams. That 29-gram increase would make sense if Casio replaces the carbon fiber insert band with a heavier metal-reinforced version.
For now, none of this has been officially confirmed by Casio. The specifications being circulated are still described as expected rather than final, and some of the listed features appear to be carried over from the existing GWF-D1000 platform. Pricing has not been revealed either.
Even without major internal upgrades, the GWF-D1000 remains one of the most capable Frogman models Casio has produced. First introduced in 2016, it was designed as a serious ISO-rated dive watch with 200-meter water resistance and a depth gauge capable of measuring down to 80 meters.
The watch also includes a digital compass with automatic horizontal correction up to 80 degrees, a thermometer operating from -10°C to 60°C, Tough Solar charging, and Multi-Band 6 radio time calibration. For divers, it can store up to 20 dive logs and includes a rapid ascent alarm that activates above 10 meters per minute.
The case construction is another key part of the Frogman’s appeal. The GWF-D1000 uses a DLC-coated stainless steel case with a resin exterior, protected by sapphire crystal measuring under 2.8 mm thick. Its dimensions are 59.2 mm by 53.3 mm by 18 mm, keeping the familiar oversized and asymmetrical Frogman profile.
That distinctive shape has helped the Frogman line stand out for decades. Unlike many G-Shock watches that focus mainly on everyday toughness, the Frogman series has always leaned into professional diving features, premium materials, and collector-focused appeal.
It remains unclear whether Casio will offer the rumored GWF-D1000BC-1JF globally or keep it mainly for the Japanese market. Recent availability suggests the GWF-D1000 has become harder to find outside Japan, which could make this release especially attractive to collectors if production is limited.
If the leak proves accurate, the Casio G-Shock Frogman GWF-D1000BC-1JF could be one of the most notable G-Shock releases of the year. A classic black design, positive LCD, professional dive features, and a metal core band would make it a compelling update to a model that has gone several years without a new colorway.
For now, G-Shock fans will have to wait for an official announcement from Casio. But if the rumored September launch window is correct, more details on the new Frogman may arrive very soon.
