Tap the image to enlarge
Casio Digital 5900 Series 46.8mm Mens Watch Black
Ref. DW-5900U-1ER
See more premium optionsHide
Stepping up in the same colour and case shape
A G-Shock built around a distinctive triple-graph LCD layout, the DW-5900U-1ER carries its retro-futuristic dial arrangement in a bio-based resin case measuring 51.4 × 46.8 × 15.5 mm and weighing 60 grams. The mineral crystal sits over a black digital dial, and a high-brightness LED backlight with selectable duration and afterglow keeps everything readable in low light. The resin strap fits wrists between 145 and 215 mm. Functions include five daily alarms with a snooze option, a 1/100-second stopwatch with split and two-place recording, a 24-hour countdown timer, world time across 29 zones, and an auto-calendar running to 2099. The CR2025 cell is rated for approximately ten years.
- Reference
- DW-5900U-1ER
- Brand
- Casio
- Collection
- G-Shock
- Case size
- 46.8mm
- Case material
- Resin
- Dial
- Black
- Crystal
- Mineral
- Movement
- Quartz
- Functions
- Stopwatch, Countdown timer, Alarm, Backlight, World time, Perpetual calendar, Digital display
- Water resistance
- 200m
- Bracelet / strap
- Rubber strap
- Strap colour
- Black
- Retailer
- Goldsmiths
Additional specifications
- Weight
- 60g
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 (85), Back in Stock (3,914), Watches 44mm and Over (837), Sports Watches (720), Watches Under £100 (646), Dive Watches (514) and All Black Watches (312).
Manufacturer’s guarantee
Best of 2 retailers
What the specifications mean
A watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- Second time zone for travelling
- Sits in the lower half of Casio's range as we list it
Worth knowing
- 46.8mm is a large watch with real presence
Casio Digital 5900 Series alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | DW-5900U-1ER | RW646AX9 | RA54-2234 |
|---|---|---|---|
| Price | £80 | £75 | £80 |
| Case size | 46.8mm | 46mm | 46mm |
| Water resistance | 200m | 100m | — |
| Movement | Quartz | Quartz | Quartz |
| Strap | Rubber strap | Stainless steel bracelet | Silicone strap |
| This watch |
| Closely matched |
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?
Yes. It is quartz, so expect a battery change every two to three years at a jeweller.
Quartz, automatic and solar comparedIs it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Both F.Hinds and Goldsmiths list it at £80, so choose on delivery and warranty rather than price.
More Casio watches like the Digital 5900 Series
In stock, and close on style and price
