G-Shock Releases DW-5900MTM-8 in Monochrome Mix
The dark-gray G-Shock watch is one of four models in the new Monochrome Mix collection rolling out this month.
Updated on Nov. 3, 2026 in Men’s Clothing

G-Shock has released the DW-5900MTM-8 watch as part of its Monochrome Mix collection, which includes four models. The watch features a dark gray bezel and case with a black dial and black resin band.
Why it matters
The release brings a monochrome colorway to a long-running G-Shock design, offering buyers a sleeker option within the brand's lineup. The new models are arriving as part of a coordinated collection rollout.
The DW-5900MTM-8 is priced at ¥15,950 (about $100) on G-Shock's Japanese site and measures 46.8mm across the bezel with 200m water resistance. Pricing and availability outside Japan were not specified in the source.
The players
G-Shock
G-Shock is Casio's rugged watch line, known for its shock-resistant construction and durable designs since its introduction in 1983.
The details
The DW-5900MTM-8 has a dark gray bezel and case, a black dial, and a black resin band, and uses a waffle texture around its three upper display windows that serve as elapsed time dials. The watch includes a stopwatch, countdown timer, five daily alarms, world time, and an auto-calendar.
Timeline
1990: The DW-5900 debuted.
Early 2026: G-Shock revamped the DW-5900 with an LED backlight and doubled battery life to 10 years.
November 2026: The Monochrome Mix collection begins rolling out.
Culture Shift
The DW-5900 debuted in 1990 with a three-window dial layout that G-Shock has continued to refine across decades. The Monochrome Mix reissues this design in a restrained, all-dark palette, reflecting a broader menswear preference for understated, tonal accessories.
Buyers interested in the DW-5900MTM-8 can compare its ¥15,950 Japanese price against local retailer pricing before purchasing. The watch's 200m water resistance and 10-year battery life make it practical for daily wear and water-based activities.
The takeaway
Monochrome colorways like the DW-5900MTM-8 offer a way to add a durable, low-profile watch to an everyday wardrobe. Checking local pricing against the Japanese list price can help buyers gauge value before committing.
Further reading
For more on accessories that complement a tonal wardrobe, explore Men's Clothing coverage.
Source note: This article includes information reported by Gear Patrol.







