A watch the size of a ring, a ring with watch functionality – that's precisely what the new Casio Ring Watch CRW-002G-9AER is, this time inspired by the iconic Casio A168 model. It expands the Casio Ring Watch range of practical yet playful digital watches that were made possible thanks to a miniature module and advanced metal processing technology.
Creating an all-metal version of a Casio watch the size of a ring with a complex shape is no easy task. To achieve this, Casio had to use a special metal processing method – injecting a mixture of fine metal powders and resin into a mould. Using metal injection moulding (MIM), the case, case back and ring are cast as a single piece. On the ring band, you'll notice that the classic bracelet design of the Casio Collection A168 watch has been faithfully preserved and reproduced.
A special glass bonding technique ensures a robust seal for the watch, achieving basic water resistance. The ring watch naturally allows for battery replacement.
The inner diameter of the Casio CRW-002G-9A ring is 20 mm with a circumference of 62.8 mm. The ring is therefore suitable for a finger size 20.5 EU (22 JP, 10.5 US, U UK).
The package includes two sizing spacers. By using them, the size can be adjusted to:
19.5 EU (19 JP, 9.5 US, T UK) (inner diameter 19 mm)
18.2 EU (16 JP, 8 US, Q UK) (inner diameter 18 mm).
The miniaturised watch module is powered by a small button battery and housed in a case that can be operated using three buttons on the sides.
Even at this small size, the watch is equipped with a 7-segment LCD display that shows the time, date, day of the week, dual time, stopwatch, alarm, 12/24 hour format, and features LED illumination of the display. The watch has an automatic calendar (February with 28 days), so you don't need to worry about adjusting it over time.
There's also a practical display illumination function when the alarm is activated.
Not sure about the size?
See the watch on a wrist
| Brand | Casio |
| Gender | Male, Female, Unisex |
| Style | Sports, Casual |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | Water resistant |
| Weight | 15 g |
| Movement | Quartz |
| Caliber | 3595 |
| Movement accuracy in seconds | ±30 sec. / month |
Stopwatch measurement accuracy ![]() |
1/100 sec. |
| Case size | 25,2 × 18,2 mm |
| Case height | 6,2 mm |
| Case shape | Square |
| Case material | Stainless steel with IP treatment |
| Case color | Gold |
| Crystal material | Mineral |
| Dial | Digital |
| Dial color | Gold, gray |
Transparent Case ![]() |
No |
| Strap material | Stainless steel with IP treatment |
| Strap color | Gold |
Quick release system ![]() |
no |
Alarm clock ![]() |
Yes |
| Date | Yes |
Dual time ![]() |
Yes |
| Backlight | Yes |
Stopwatch ![]() |
Yes |
Day of the week indicator ![]() |
Yes |
| Functions | Date, Day of the week, Stopwatch, Alarm clock, Automatic calendar, Dual time / GMT |
| Battery | Yes |
| Other functions | Režim 12/24, Automatický kalendář, Hodinový sígnál, Stopky, Rozsvícení displeje při alarmu ad. |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 8 EUR on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
Ladies dress watch Ladies Steel Watches Men's dress watches Men's gold watches Men's steel watches Men's watches with stopwatch Women's gold watches Ladies Japan Watches Ladies sports watch Men's Japanese watch Men's Quartz watches Men's sports watches Men's watches under 200 EUR Men's watches with date Women's Quartz watches Women's watches under 200 EUR Men's watches under 400 EUR Men's watches with alarm Women's watches under 400 EUR Men's watches novelties Women's watches Casio Women's watches novelties Women's watches with GMT (second time zone) Unisex Watches Men's watches with GMT (second time zone) Classic Collection Classic Collection Men’s watches Casio Classic Collection Women's watches with alarm Women's watches with date Women's watches with stopwatch Men's watches with steel bracelet Women's watches with steel bracelet Men’s Watches Casio Watch gift for men Watch gift for woman Men's watch with mineral glass Women's watch with mineral glass
Casio, Japan is one of the best-selling watch brands in the world. The first watches from the Casia workshop were digital and at the same time the first in the world to display the date. Casio's digital watches are no longer popular today, although analog watches or watches with a combined time display already form a large part of the range.
Casio has made history with its range of super-durable G-Shock watches, which are equipped with a light but sufficiently durable construction (against falls of up to 10 m, shocks, vibrations, magnetic field and temperature fluctuations) and a great value for money. The glory of the G-Shock watch over time also required a lightweight women's version - Baby-G. The Casio Pro Trek or Casio Edifice outdoor watches are also very popular. Casio does not lag behind in modern technology either, as evidenced by models equipped with Bluetooth technology, the Tough Solar solar drive or the high-precision radio-controlled Wave Ceptor watch.
Helveti.eu is an authorized dealer and specialist of the Casio brand.
Manufacturer information: CASIO Europe GmbH, Casio-Platz 1 D-22848 Norderstedt, Germany / info@casio.de
Do you have a question? Leave us a comment
Add a query
1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: