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Casio G-Shock GA-2100SKE-7AER Transparent White Strap Watch - W17259
Ref. GA-2100SKE-7AER
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Stepping up in the same dial colour
The GA-2100 line traces directly back to the original 1983 DW-5000C, the watch that established what a G-Shock could be, and this SKE variant adds a further layer to that story: the Carbon Core Guard structure gets a semi-transparent shell throughout, case and strap alike, so the architecture that normally hides inside becomes part of what you see. The octagonal bezel earned the line its "CasiOak" nickname for obvious reasons, and the skeleton treatment sits interestingly against that association — the form that borrows from high-end sports watches here turns its own construction visible. At 45.4mm it sounds substantial, but 11.8mm of thickness is genuinely slim for a G-Shock rated to 200 metres, and on the wrist that thinness dominates: it passes under a cuff cleanly and sits flat in a way the wider G-Shock catalogue rarely does. The white transparent strap runs from 150mm to 215mm via pre-moulded holes, fits a broad range of wrists without cutting, and the quick-release spring bars mean changing it takes seconds. The Super Illuminator backlight covers both the analogue dial and the LCD simultaneously, which compensates practically for lume that is present but unambitious.
- Reference
- GA-2100SKE-7AER
- Brand
- Casio
- Collection
- G-Shock
- Case size
- 45.4mm
- Case thickness
- 11.8mm
- Lug width
- 16mm
- Case material
- Resin
- Case shape
- Octagonal
- Dial
- Black
- Crystal
- Mineral
- Movement
- Quartz
- Calibre
- 5611
- Functions
- Chronograph, Day-date, Stopwatch, Countdown timer, Alarm, Backlight, World time, Dual display
- Water resistance
- 200m
- Bracelet / strap
- Rubber strap
- Strap colour
- White
- Clasp
- Buckle
- Lume
- Luminous
- Retailer
- F.Hinds
Additional specifications
- Lug-to-lug
- 48.5mm
- Strap
- Interchangeable
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 (4,683), Chronograph Watches (1,219), Watches 44mm and Over (827), Sports Watches (800), Watches Under £100 (589) and Dive Watches (568).
Manufacturer’s guarantee
What the specifications mean
A watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- 48.5mm lug-to-lug keeps the 45.4mm case wearable
- Luminous hands and markers for low light
- Second time zone for travelling
- Sits in the lower half of Casio's range as we list it
Worth knowing
- 45.4mm is a large watch with real presence
Casio G-Shock GA-2100SKE-7AER Transparent White alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | GA-2100SKE-7AER | RW647AX9 | RYS07-4004-SET |
|---|---|---|---|
| Price | £99 | £99 | £100 |
| Case size | 45.4mm | 46mm | 46mm |
| Water resistance | 200m | 100m | — |
| Movement | Quartz | Quartz | Quartz |
| Strap | Rubber strap | Stainless steel bracelet | Mesh bracelet |
| 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 comparedWhat size strap does it take?
16mm. 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 48.5mm, 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.
Cheapest place to buy
F.Hinds is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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