Casio specifies a weight of 65 g for its GCW-B5000UN Carbon Edition, a 40th-anniversary addition to the G-SHOCK 5000 series. The official models are GCW-B5000UN-1 and GCW-B5000UN-6. That figure is a manufacturer specification, not an independent measurement; Casio compares it with the approximately 167 g catalog weight of the stainless-steel GMW-B5000D.
What is the GCW-B5000UN Carbon Edition?
Announced on November 10, 2023, as part of G-SHOCK’s 40th-anniversary releases, the GCW-B5000UN family carries forward the familiar 5000-series case shape while using carbon-based construction to reduce weight. Casio’s launch release describes the original DW-5000C as the watch that established the brand’s “tough watch” category.
![Casio Men's GWX-5600-1JF G-Shock G-Lide Tough Solar Radio Controlled Watch [Japan Import]](https://m.media-amazon.com/images/I/510un6cqyfL._SL160_.jpg)
The family has two finish variants: GCW-B5000UN-1 and GCW-B5000UN-6. Casio’s US listing identifies the -1 as discontinued and sold out in that market; that status does not establish availability in other regions.
How light is it, and what does the comparison mean?
Casio specifies the GCW-B5000UN at 65 g. In its 2023 launch release, the company compares that catalog weight with the approximately 167 g catalog weight of the stainless-steel GMW-B5000D, describing the Carbon Edition as 61% lighter. Both figures are manufacturer specifications, not independent scale measurements.
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![CASIO G-Shock GW-5000U-1JF [20 ATM Water Resistant Solar Radio Wave GW-5000 Series] Shipped from Japan](https://m.media-amazon.com/images/I/417vmJCk13S._SL160_.jpg)
- Shock resistant structure protects against impact
- 200 meters water resistance for swimming and snorkeling
- Solar-powered battery charges itself from any light source
- Atomic timekeeping syncs to radio towers for precise accuracy
- LED backlight illuminates the digital display in low light
The case measures 49.1 × 45 × 14.5 mm according to Casio’s US product listing. The weight reduction comes with a different material mix, rather than a change to the watch’s basic 5000-series identity.
What is made of carbon?
Carbon is used in several parts, but Casio does not describe every component as forged carbon. The bezel and band are forged carbon; the clasp’s folding arm is multilayer carbon; and the monocoque case, including its integrated case back, is carbon-fiber-reinforced resin.
Rank #2
- Enhance your style with some seriously sophisticated timekeeping from the 5000 line
- Directly descended from the first-ever G-SHOCK , the GMW-BZ5000 carries on the evolution of function and material in a transformative, unprecedented design
- They kept the iconic form of the original G-SHOCK, while developing a new structure that extends the case all the way to the lugs to even further mitigate shock transmission
- Bezel and band: forged carbon.
- Clasp folding arm: multilayer carbon.
- Monocoque case and integrated case back: carbon-fiber-reinforced resin.
How do the -1 and -6 versions differ?
Casio presents the two watches as color variants in the same product family, not as models with different stated specifications.
| Model | Finish |
|---|---|
| GCW-B5000UN-1 | Black and grey. |
| GCW-B5000UN-6 | Black carbon with blue and pink resin and opal specks. |
Because the material is forged carbon, the pattern and tone vary from watch to watch. Casio also notes that the distribution of opal specks varies between individual examples, so the precise appearance shown in a product image is not guaranteed for every watch.
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Rank #3
- Iconic G-SHOCK Square Design – The legendary square case that started it all, delivering timeless style and the rugged durability G-SHOCK is known for.
- Shock Resistant & 200M Water Resistant – Built to withstand impacts, swimming, snorkeling, and demanding everyday use.
- Super Illuminator LED Backlight – Bright white LED with afterglow ensures excellent readability in low-light conditions.
- Essential Digital Features – Includes 1/100-second stopwatch, 24-hour countdown timer, multi-function alarm, flash alert, and full auto-calendar.
- Reliable 5-Year Battery Life – Powered by a CR2016 battery for long-lasting performance with minimal maintenance.
What features and specifications does Casio list?
Casio lists the following features for the family. The specifications below describe the manufacturer’s published claims, not independent testing.
- Shock resistance and 200 m water resistance.
- Tough Solar charging.
- Multi Band 6 radio time calibration and Bluetooth phone linking.
- Sapphire crystal with anti-reflective coating.
- World time, stopwatch, countdown timer and alarms.
- About 10 months of operation after a full charge without further solar charging, or about 22 months with power saving enabled, as stated in Casio’s 2023 launch release.
The cited battery figures are Casio’s stated operating estimates under the conditions specified; they are not observed results from a particular watch.
Rank #4
- Pursuing further toughness while inheriting the DNA of the first G-SHOCK model (DW5000) the GW5000U-1 is constructed with a solid metal case and a screw back
- This timepiece is also equipped with advanced technology, Multi-Band 6 that receives standard radio waves from 6 stations around the world
- Evolved from the G-SHOCK original design that was born in 1983, the GW5000U-1 is a discerning model that boasts technology and a high-quality finish.Case: 48.9 ? 42.8 ? 13.5 mmWeight: 74 gCase and bezel material: Stainless steel / ResinBand: Resin bandConstruction: Shock ResistantWater resistance:200-meter water resistanceTough Solar (Solar powered)Mineral GlassScrew Lock BackStopwatch: 1/100-second stopwatchTimer: Countdown timer; Measuring unit: 1 second; Countdown range: 24 hours; Countdown
Where can you check availability?
Availability depends on region and retailer. Casio’s US GCW-B5000UN-1 page currently labels that listing discontinued and sold out. That page does not establish the status of the -6 or availability in other countries, so check the relevant regional Casio listing and retailer before buying. Casio’s product pages provide the family’s published specifications and finish details: US GCW-B5000UN-1 listing, G-SHOCK 40th-anniversary family page and UK GCW-B5000UN-6 listing.
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