CITIZEN NJ0210-05E MECHANICAL MEN WATCH
NJ0210-05E
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- 3 Years Warranty
The Citizen NJ0210-05E is a classic automatic dress watch that gives you more dial than its price suggests. A black dial with Arabic numerals is framed by an angled inner flange marked with a 60-minute scale and a fine railroad minute track running beside the hour markers — detailing usually reserved for watches well above this level.
Elegant Dauphine hands — faceted and tapering, a traditional dress-watch form — sweep over a date window at 3 o'clock. The 40mm stainless steel case features stepped lugs and a thin polished bezel, and an exhibition caseback lets you watch the movement work.
That movement is Citizen's in-house Calibre 8210, a self-winding automatic running at 3Hz with a 40-hour power reserve. No battery — it winds from the natural motion of your wrist. Mineral crystal protects both the dial and the display back, the case is water resistant to 50 metres, and it's finished on a black leather strap with a pin buckle.
At a Glance
- BrandCitizen
- CollectionMechanical
- MovementCalibre 8210 Automatic
- Case Size40mm
- Thickness13.02mm
- DialBlack
- HandsDauphine
- MarkersArabic Numerals
- CasebackExhibition
- StrapBlack Leather
- Power Reserve40 Hours
- Water Resistance50m
Why You'll Love It
- The exhibition caseback lets you watch the Calibre 8210 working — the rotor swinging, the balance wheel oscillating. It's the detail that makes owning a mechanical watch tangible rather than abstract.
- Calibre 8210 is a genuine Citizen in-house movement, not an outsourced one — self-winding, proven, and serviceable.
- The dial is more considered than the price suggests: an angled inner flange with a 60-minute scale and a fine railroad track beside the numerals, rather than a plain printed face.
- Dauphine hands are a traditional dress-watch form — faceted so they catch light and shift between bright and dark as the wrist moves.
- No battery, ever. The movement winds itself from the natural motion of your wrist, so there's nothing to replace and nothing to plug in.
- Black dial on a black leather strap is the most formal combination available — it reads correctly with a suit and stays understated in the office.
- Stepped lugs and a thin polished bezel are small case details that lift the watch above a flat, generic entry-level design.
- 50-metre water resistance covers handwashing, rain and everyday splashes without concern.
Perfect For
- First Automatic Watch
- Mechanical Watch Enthusiasts
- Classic Dress Style
- Office & Formal
- Exhibition Caseback Fans
- Leather Strap Wearers
- Gift for Him
Key Features
- In-house Calibre 8210 automatic movement — self-winding, 3Hz, with a 40-hour power reserve. No battery required.
- Exhibition caseback — a clear view of the movement in operation.
- Black dial with Arabic numerals — plus an angled inner flange with a 60-minute scale and a railroad minute track.
- Dauphine hands — faceted, tapering, classically proportioned.
- Date display — at the 3 o'clock position.
- 40mm stainless steel case — 13.02mm thick, with stepped lugs and a thin polished bezel.
- Mineral crystal front and back — protecting the dial and the display caseback.
- Black leather strap — with a pin buckle.
- 50-metre water resistance (5 BAR) — rated for handwashing, rain and everyday splashes.
Technical Specifications
The Citizen NJ0210-05E is a 40mm men's automatic watch powered by the in-house Calibre 8210, a self-winding movement running at 3Hz with a 40-hour power reserve. The stainless steel case measures 13.02mm thick with stepped lugs, a thin polished bezel, mineral crystal front and back, and an exhibition caseback, water resistant to 50 metres. The black dial carries Arabic numerals, Dauphine hands, an angled inner flange with a 60-minute scale, a railroad minute track and a date display at 3 o'clock. It's finished on a black leather strap with a pin buckle.
| Model Number | NJ0210-05E |
| Case Material | Stainless Steel, Silver-Tone |
| Case Shape | Round |
| Case Diameter | 40mm |
| Case Thickness | 13.02mm |
| Lugs | Stepped |
| Bezel | Thin, Polished |
| Caseback | Exhibition |
| Glass | Mineral Crystal, Front & Back |
| Water Resistance | 50 Metres (5 BAR) |
| Colour | Black |
| Markers | Arabic Numerals |
| Hands | Dauphine |
| Detailing | Angled Inner Flange, 60-Minute Scale, Railroad Track |
| Display | Hours, Minutes, Seconds, Date (3 O'Clock) |
| Material | Leather |
| Colour | Black |
| Clasp | Pin Buckle |
| Calibre | Citizen 8210 (In-House) |
| Type | Automatic (Self-Winding) |
| Frequency | 3Hz |
| Power Reserve | 40 Hours |
Best Matched With
- Charcoal Suit
- White Dress Shirt
- Black Leather Belt
- Navy Blazer
- Grey Wool Trousers
- Formal Occasions
Frequently Asked Questions
What does "automatic" mean?
An automatic watch is powered by the natural movement of your wrist. A rotor inside the case winds the mainspring as you wear it, so no battery is needed. If left unworn for around a day and a half it will stop and need resetting — simply wear it again to restart it.
Can I see the movement?
Yes. The caseback is an exhibition window, so you can watch the Calibre 8210 working — the rotor swinging as you move and the balance wheel oscillating. Both the front crystal and the display back are mineral.
What are Dauphine hands?
Dauphine hands are broad at the base and taper to a point, with a faceted ridge running down the centre. The facets catch light from different angles, so the hands shift between bright and dark as the watch moves. It's a classic dress-watch form.
How long does the power reserve last?
40 hours when fully wound, so it keeps running for well over a day after you take it off. Regular daily wear keeps it continuously wound.
How accurate is a mechanical watch?
Mechanical movements aren't as precise as quartz by design — expect to reset the time every week or two. The appeal is the engineering, the exhibition caseback, and the fact it never needs a battery.
Does a mechanical watch need servicing?
Yes. Unlike a quartz watch, an automatic has moving parts and lubricants that wear over time. Citizen recommends periodic servicing to keep timekeeping and water resistance within spec. Any City Chain outlet can arrange this — bring your warranty card.
Can I swim with this watch?
No. With 50-metre (5 BAR) water resistance it's rated for handwashing, rain and brief accidental splashes, but it isn't intended for swimming, showering or diving — and the leather strap shouldn't be submerged in any case.
Will 40mm fit my wrist?
40mm sits right in the middle of the modern men's range and suits most wrist sizes from roughly 15cm to 19cm. At 13.02mm it's a substantial watch rather than an ultra-slim one — that thickness is what accommodates the automatic movement and the display caseback.
Can the strap be replaced?
Yes. The leather strap can be adjusted or replaced as needed. City Chain offers leather strap adjustment at any store — bring your warranty book along for the service.
What warranty does this watch come with?
The NJ0210-05E comes with a 3-year warranty when purchased from City Chain Singapore, an authorised Citizen retailer. 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
- 3-Year Warranty Covered on every purchase
- Free Shipping All orders within Singapore
- Strap Adjustment Available in-store
Gift With Purchase
Free Promaster Travel Watch Pouch with every Citizen watch purchase. While stocks last.
Extra $15OFF with min. $200 spend
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Caliber No.: 8210
Movement: Mechanical Automatic
Jewels: 21 jewels
Frequency: 21,600 vibrations per hour (vph)
Power Reserve: Approx. 40 hours (fully wound)
Functions: Date Display
Case Size: 40mm
Case Thickness: 13mm
Case Material: Stainless Steel
Glass: Mineral Glass
Strap: Calf Leather
Water Resistance: 50 metres
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.
