Tap the image to enlarge
Casio Full Metal 5000 Series 49.5mm Limited Edition Mens Watch Silver
Ref. GMW-BZ5000RC-1ER
Sits in Casio’s upper tier here — more premium than three quarters of the Casio watches we list, which start at £25.
Price range £25 to £799 across 101 Casio watches in stock.The 5000 series is the shape G-SHOCK was built around in 1983, and the Full Metal line is Casio's argument that the same form can be executed in solid stainless steel without surrendering any of what made it worth protecting. This particular variant goes further: the case structure was co-developed with AI trained on four decades of shock-resistance data, and the result opens the bezel away from the centre case rather than covering it — exposing a gradient rainbow ion-plated interior that shifts colour with the light. Gold-toned screws and a rainbow-treated crystal surface sit alongside it, each finish distinct, none competing. Assembled at Casio's Yamagata facility in Japan, the movement handles its own timekeeping through Multiband 6 radio calibration and Bluetooth synchronisation, so the time is simply correct. The MIP display is readable in direct sunlight where conventional LCD washes out, and the font can be switched between a modern layout and a classic seven-segment look through the companion app. At 172 grams on a solid bracelet this wears with real presence; the clasp takes micro-adjustments at the link pins, which matters when a watch this substantial needs to sit exactly right.
- Reference
- GMW-BZ5000RC-1ER
- Brand
- Casio
- Collection
- G-Shock
- Case size
- 49.5mm
- Case thickness
- 13mm
- Lug width
- 25.5mm
- Case material
- Stainless steel
- Case shape
- Rectangular
- Dial
- Black
- Crystal
- Mineral
- Movement
- Solar
- Calibre
- 3575
- Functions
- Date, Stopwatch, Countdown timer, Alarm, Backlight, World time, Solar powered, Radio controlled, Bluetooth, Digital display
- Water resistance
- 200m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Three-fold clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 49.3mm
Learn more about Casio
Tadao Kashio founded Kashio Seisakujo in Tokyo in 1946 as a machine shop. The company's first success was a finger ring that held a cigarette, and its second was the 14-A of 1957 — the world's first all-electric compact calculator, which used solenoids rather than gears.
Casio entered watchmaking in 1974 with the Casiotron, a digital watch with an automatic calendar that knew the varying lengths of months. The company approached watches as an electronics manufacturer rather than a horological one, and that difference produced the G-Shock.
The G-Shock came from a single engineer, Kikuo Ibe, who broke a watch his father had given him and set out to build one that could not break. The specification was three tens: survive a ten-metre drop, ten bars of water pressure, and ten years of battery life. It took over two hundred prototypes, and the solution was suspending the module inside the case on a cushioned internal structure rather than mounting it rigidly. The DW-5000C shipped in 1983.
It became one of the most durable product designs in any category, adopted by militaries, emergency services, and skateboarders alike, and Casio has since added solar charging, radio and GPS timekeeping, Bluetooth, and full-metal and carbon variants.
Casio also produces the Edifice, Pro Trek, and Oceanus lines, and remains an independent Japanese public company.
- 1946
- Tadao Kashio founds the company in Tokyo.
- 1974
- The Casiotron is Casio's first digital watch.
- 1983
- The G-Shock DW-5000C survives Kikuo Ibe's three-tens brief.
- 1994
- The Frogman extends G-Shock to ISO dive certification.
Also in 7 collections
This watch appears in the Casio G-Shock range (84), Back in Stock (3,734), Stainless Steel Watches (2,581), Sports Watches (707), Watches 44mm and Over (603), Dive Watches (505) and Rectangular & Square Watches (359).
Temporarily out of stock
Goldsmiths is not currently taking orders for this reference. Last listed as available on 29 September 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
A watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- 49.3mm lug-to-lug keeps the 49.5mm case wearable
- Luminous hands and markers for low light
- Second time zone for travelling
- One of Casio's more premium watches
Worth knowing
- 49.5mm is a large watch with real presence
Casio Full Metal 5000 Series alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | GMW-BZ5000RC-1ER | JY8110-51E | 010-02906-11 |
|---|---|---|---|
| Price | £769 | £799 | £779 |
| Case size | 49.5mm | 47mm | 47mm |
| Water resistance | 200m | 200m | 100m |
| Movement | Solar | Solar | Solar |
| Strap | Stainless steel bracelet | Titanium bracelet | Silicone strap |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 200m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
It can, over time. Mineral glass handles daily wear but will pick up fine scratches that sapphire would not.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It charges from light, and the cell behind that is designed to last a decade or more.
Quartz, automatic and solar comparedWhat size strap does it take?
25.5mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 49.3mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's.
More Casio watches like the Full Metal 5000 Series
In stock, and close on style and price
