CITIZEN EG2790-12A ECO-DRIVE WOMEN WATCH
EG2790-12A
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- 3 Years Warranty
The Citizen EG2790-12A is a small rectangular dress watch built around Caliber G620 — Citizen's smallest Eco-Drive movement. That is what makes the rest of it possible: a case measuring 17.3 by 24.5mm and just 5.4mm thick, which is slimmer than most watches of any size.
It shows hours and minutes only. No seconds hand, no date, nothing else on the dial — a deliberately quiet layout of printed Roman numerals on a silver sunray surface that shifts as it catches the light. The silver-tone stainless steel case has softly rounded edges, and the crown is slightly oversized and set with a black cabochon, a jewellery detail rather than a functional one.
An embossed black calf leather strap keeps the whole thing light and low-profile. Because it runs on Eco-Drive, there is no battery to replace — it charges from any light source and holds around 8 months of reserve from a full charge. Water resistant to 30 metres.
It belongs to Citizen's Kii collection, which is sold as Fio Roma in some markets — the same three watches under two regional names.
At a Glance
- BrandCitizen
- CollectionKii (Fio Roma)
- MovementCaliber G620 Eco-Drive
- Case Size17.3mm x 24.5mm
- Thickness5.4mm
- Case ShapeRectangular
- DialSilver Sunray
- MarkersPrinted Roman Numerals
- DisplayHours & Minutes Only
- StrapBlack Embossed Calf Leather
- Power ReserveApprox. 8 Months
- Water Resistance30 Metres
Why You'll Love It
- 5.4mm thick. That is the number worth pausing on — it is slimmer than most dress watches at any size, and it means the watch disappears under a sleeve entirely rather than catching on it.
- Citizen's smallest Eco-Drive movement is what allows the case to be this compact. Fitting light-powered technology into a 17.3mm rectangular case is the engineering behind the whole design.
- Hours and minutes, and nothing else. No seconds hand ticking away, no date window interrupting the numerals — the dial stays completely still and completely clean.
- The sunray finish gives a plain silver dial somewhere to go. It brightens and darkens as the angle changes, so the watch reads differently across a day without ever being loud about it.
- The black cabochon in the crown is a jewellery detail, not a functional one. On a watch this small it does a lot of work — it is the thing people notice when you push a sleeve back.
- Printed Roman numerals rather than applied markers keep the dial flat and uncluttered, which is what makes a case this small still legible.
- Eco-Drive means no battery, ever. No appointment to change a cell, no watch stopping unexpectedly before an occasion — it charges from any light and holds around 8 months of reserve.
- The embossed leather strap adds texture without bulk and keeps the watch light on the wrist. Leather also softens and shapes to you over time in a way a bracelet does not.
- A rectangular case reads as more considered than a round one at this size, and it sits neatly alongside bracelets and bangles rather than competing with them.
- Two sibling models share this case and movement in yellow gold-tone and rose gold-tone finishes, so the design is available in a warmer tone if silver is not your metal.
Perfect For
- Everyday Wear
- Office & Formal
- Small Dress Watches
- Rectangular Case Fans
- Minimalist Dials
- Slim Watch Fans
- Leather Strap Lovers
- Stacking With Bracelets
Key Features
- Citizen Eco-Drive Caliber G620 — Citizen's smallest Eco-Drive movement, light-powered with no battery required, accurate to approximately ±15 seconds per month and holding a charge for around 8 months.
- Hours and minutes display — a two-hand layout with no seconds hand and no date.
- Silver sunray dial with printed Roman numerals — a brushed radial finish that catches light across the surface.
- Rectangular stainless steel case with rounded edges — 17.3 x 24.5mm and 5.4mm thick, in a silver-tone finish.
- Slightly oversized crown set with a black cabochon — a jewellery-style detail against the silver-tone case.
- Embossed black calf leather strap — 12mm width, textured finish.
- Dial components made using recycled materials — part of Citizen's environmentally conscious design approach.
- Mineral glass — covers and protects the dial.
- Overcharge Prevention Function — protects the cell automatically in strong light.
- 30-metre water resistance (3 BAR) — rated for handwashing, rain and everyday splashes.
Technical Specifications
The Citizen EG2790-12A is a compact women's Eco-Drive watch from the Kii collection, also sold as Fio Roma. It is powered by Caliber G620, Citizen's smallest Eco-Drive movement, which requires no battery and is accurate to approximately ±15 seconds per month. The rectangular silver-tone stainless steel case measures 17.3 x 24.5mm and just 5.4mm thick, with mineral glass and 30 metres of water resistance. The silver sunray dial displays hours and minutes only, with printed Roman numerals and no seconds hand or date. The crown is slightly oversized and set with a black cabochon. A full charge holds for approximately 8 months, with Overcharge Prevention built in, and the watch is finished on an embossed black calf leather strap.
| Model Number | EG2790-12A |
| Collection | Kii (Fio Roma) |
| Case Material | Stainless Steel |
| Case Shape | Rectangular, Rounded Edges |
| Case Size | 17.3mm x 24.5mm |
| Case Thickness | 5.4mm |
| Case Finish | Silver-Tone |
| Crown | Oversized, Black Cabochon |
| Glass | Mineral |
| Water Resistance | 30 Metres (3 BAR) |
| Colour | Silver |
| Finish | Sunray |
| Markers | Printed Roman Numerals |
| Hands | Two-Hand |
| Display | Hours, Minutes |
| Materials | Dial Components Use Recycled Materials |
| Material | Calf Leather, Embossed |
| Colour | Black |
| Width | 12mm |
| Caliber | Citizen G620 |
| Type | Eco-Drive (Light-Powered) |
| Accuracy | Approx. ±15 Seconds/Month |
| Full Charge Reserve | Approx. 8 Months |
| Functions | Overcharge Prevention |
| Battery | Not Required |
Best Matched With
- Silk Blouse
- Tailored Blazer
- Silver Bangles
- Black Midi Dress
- Cream Knitwear
- Structured Handbag
Frequently Asked Questions
Does it have a seconds hand or a date?
Neither. The EG2790-12A shows hours and minutes only, on a two-hand dial. That is a deliberate design choice — it keeps the dial completely still and uncluttered, which is what allows Roman numerals to stay legible on a case this small.
What is Eco-Drive?
Eco-Drive is Citizen's light-powered movement technology. A cell beneath the dial converts any light source — sunlight, a lamp, an overhead office light — into energy stored in a rechargeable cell, so the watch never needs a battery.
How long does the charge last if I stop wearing it?
Approximately 8 months from a full charge with no further light exposure — one of the longer reserves in Citizen's range, which is notable given how small the movement is.
Can I leave it in direct sunlight to charge?
Yes. The Overcharge Prevention function stops the cell taking on more energy than it can hold, so the movement protects itself automatically. You do not need to monitor charging.
Will the rechargeable cell ever need replacing?
The Eco-Drive cell is designed to last many years of normal use and is not a consumable battery you swap out annually. If it does eventually need attention, any City Chain outlet can arrange servicing — bring your warranty book along.
How small is it, really?
The case is 17.3mm wide and 24.5mm long — a genuinely petite dress watch designed to sit neatly on the wrist rather than make a statement of size. The more unusual figure is the 5.4mm thickness, which is slim even by dress watch standards and means it slides under a sleeve without catching.
Can I wear it in water?
The case is rated to 30 metres, which covers handwashing, rain and everyday splashes. It is not intended for swimming or submersion. The leather strap should be kept dry regardless — leather does not respond well to repeated wetting.
Can I change the strap?
Yes. The strap is 12mm wide, so any 12mm replacement will fit. Any City Chain outlet can help with fitting and can advise on the options available.
How should I care for the leather strap?
Keep it dry and away from prolonged direct sunlight, and let it air out if it does get damp. Leather is a wearing part — it will soften and shape to your wrist over time, and will eventually need replacing, which is straightforward at 12mm.
What is mineral glass?
Mineral glass is hardened glass used to cover and protect the dial. It is the standard crystal across much of Citizen's range. Citizen's higher-tier models use sapphire crystal instead, which offers greater resistance to scratching.
Is this watch available in other finishes?
Yes. The same case and movement are offered in a yellow gold-tone finish with a dark brown strap, and a rose gold-tone finish with a grey strap. Ask at any City Chain outlet about current availability.
What warranty does this watch come with?
The EG2790-12A comes with a City Chain Singapore warranty when purchased from an authorised outlet. Keep your warranty card and proof of purchase — both are required when submitting the watch for service at any City Chain outlet.
Why Buy from City Chain Singapore
- Authorised Retailer 100% genuine Citizen product
- Warranty Included Covered on every purchase
- Free Shipping All orders within Singapore
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Calibre: G620
Eco-Drive
Insufficient Charge Warning Function
Overcharge Prevention Function
Case Size: 17.3mm x 24.5mm
Case Thickness: 5.4mm
Case Material: Stainless Steel
Glass: Mineral Glass
Strap Material: Calf Leather
Water Resistance: 3 ATM
Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)
• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)
Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.
For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.
