SEIKO LUKIA SSWA012J QUARTZ TWO-TONE STAINLESS STEEL WOMEN WATCH
SSWA012J
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- Backordered, shipping soon
- 15% off in cart
- Warranty 3 Years
The Seiko Lukia SSWA012J comes from Lukia's Happy Collection — a line Seiko builds around a heart-lifting sparkle, with the stated intention that each glance at your wrist should leave you feeling brighter. Here that comes down to one thing on the dial: lab-grown diamonds, real stones grown rather than mined, set into the face of a watch small enough to read as jewellery.
And it is small. The stainless steel case measures 21.0mm across and 7.0mm thick, and the complete watch weighs 42 grams on its bracelet — light enough that you stop noticing it, slim enough to clear any cuff. Over the dial sits curved sapphire with the anti-reflective coating on its inner surface. Calibre 4N30 keeps time to ±15 seconds a month and runs about three years between batteries, with magnetic resistance built in and water resistance reinforced to 10 bar.
At a Glance
- BrandSeiko
- CollectionLukia — Happy Collection
- MovementCalibre 4N30 Quartz
- DialLab-Grown Diamonds
- Case Width21.0mm
- Case Thickness7.0mm
- Case Length29.2mm
- Weight42g
- GlassCurved Sapphire, AR Coated
- Battery LifeApprox. 3 Years
- Accuracy±15 sec/month
- Water Resistance10 BAR
Why You'll Love It
- Real diamonds on the dial, grown in a laboratory rather than mined — the same crystal structure, the same hardness, the same way of catching light.
- 7.0mm thick and 42 grams complete. Very little on a metal bracelet achieves either figure, and together they are why this watch clears a cuff and then disappears.
- 21.0mm wide and 29.2mm long. Small on purpose, and proportioned for a wrist that larger watches simply overwhelm.
- Curved sapphire rather than mineral glass, with the anti-reflective coating on the inner surface where knocks and scratches cannot reach it.
- ±15 seconds a month from Calibre 4N30 — a quarter of a minute at worst, so it needs checking two or three times a year rather than weekly.
- Around three years between battery changes, so it asks almost nothing of you in between.
- Magnetic resistance built into the movement, which matters more than it sounds given how many magnets sit in a phone case, a laptop lid and a handbag clasp.
- Reinforced to 10 bar for daily wear, so washing, rain and swimming are all well within it.
- A one-push triple-fold clasp rather than a pin buckle — quicker to fasten one-handed, and more secure once closed.
- Part of the Happy Collection, which is Seiko's most straightforwardly cheerful Lukia line rather than its most formal one.
Perfect For
- Everyday Elegance
- Office & Formal Wear
- Evening Occasions
- Petite Wrists
- Low-Maintenance Wear
- Japanese Design
- Milestone Gift
- Gift for Her
Key Features
- Lab-grown diamond dial — the feature Seiko names on this reference.
- Calibre 4N30 quartz movement — battery powered, accurate to an average monthly rate of ±15 seconds, with a battery life of approximately 3 years.
- Stainless steel case — 21.0mm wide, 7.0mm thick and 29.2mm long, at a total weight of 42 grams.
- Curved sapphire crystal with anti-reflective coating on the inner surface.
- Metal bracelet with a one-push triple-fold clasp, fitting a wrist of up to 176mm.
- Magnetic resistance built into the movement.
- Daily-life reinforced water resistance to 10 bar.
- Happy Collection — the Lukia line Seiko builds around a heart-lifting sparkle meant to brighten everyday wear.
Technical Specifications
The Seiko Lukia SSWA012J is a quartz ladies' watch from Lukia's Happy Collection, powered by Calibre 4N30 with an average monthly rate of ±15 seconds and a battery life of approximately 3 years. Its dial is set with lab-grown diamonds. The stainless steel case measures 21.0mm wide, 7.0mm thick and 29.2mm long, and the complete watch weighs 42 grams. Curved sapphire with anti-reflective coating on the inner surface covers the dial. It is fitted to a metal bracelet with a one-push triple-fold clasp sized to a maximum wrist circumference of 176.0mm, and offers magnetic resistance and daily-life reinforced water resistance to 10 bar.
| Model Number | SSWA012J |
| Case Material | Stainless Steel |
| Case Width | 21.0mm |
| Case Thickness | 7.0mm |
| Case Length | 29.2mm |
| Weight | 42.0g |
| Glass | Curved Sapphire, Anti-Reflective Inner Coating |
| Water Resistance | 10 BAR, Daily-Life Reinforced |
| Magnetic Resistance | Yes |
| Dial | Set with Lab-Grown Diamonds |
| Type | Metal Bracelet |
| Clasp | One-Push Triple-Fold |
| Maximum Wrist Circumference | 176.0mm |
| Calibre | Seiko 4N30 |
| Type | Quartz, Battery Powered |
| Display | Analogue |
| Accuracy | Average Monthly Rate ±15 seconds |
| Battery Life | Approx. 3 Years |
Best Matched With
- Silk Blouse
- Tailored Blazer
- Evening Dress
- Fine Knitwear
- Stacked Bracelets
- Delicate Jewellery
- Court Shoes
Frequently Asked Questions
What is the Happy Collection?
A Lukia line Seiko builds around a heart-lifting sparkle — watches meant to colour a woman's everyday life, so that each glance at the wrist brings a happy, positive feeling. It is the least formal of Lukia's lines in intent, even where the watches themselves are dressy.
What are lab-grown diamonds?
Diamonds in every sense that matters — the same crystal structure, the same hardness, the same way of handling light — produced in a laboratory instead of being mined. What changes is the origin, not the stone. Seiko sets them into this reference's dial.
How long does the battery last?
Approximately three years. City Chain can replace the battery at any outlet, and it is worth having the case seals checked at the same time, since those are what maintain the water resistance over the years.
How accurate is it?
Seiko states an average monthly rate of ±15 seconds for Calibre 4N30. That is a quarter of a minute a month at worst, so checking it against your phone two or three times a year is enough.
Can I swim with it?
Yes. Seiko rates it at 10 bar with reinforced water resistance for daily life, which covers washing, rain and swimming comfortably. It carries no diver's designation, so it should not be used for scuba diving. Rinse it in fresh water after a pool or the sea.
How does 21mm wear?
Very small, and that is the intention. At 21.0mm wide, 29.2mm long and 7.0mm thick it reads as jewellery that happens to tell the time, and at 42 grams it is light enough to forget. It suits petite wrists particularly well and disappears under a sleeve. Any City Chain outlet can put it on your wrist.
Will it fit my wrist?
The bracelet is sized to a maximum wrist circumference of 176mm as supplied, and links can be removed to take it smaller. If your wrist measures above that, this is not the right reference — worth checking before you order.
Can the bracelet be adjusted?
Yes. Links can be added or removed within the bracelet's range, and the one-push triple-fold clasp opens on a button rather than a pin. City Chain offers complimentary bracelet sizing at any outlet; bring your warranty book along for the service.
What does magnetic resistance protect against?
Everyday magnets. Phone cases, laptop lids, handbag clasps and speaker housings all contain them, and sustained contact can disturb a watch's timekeeping. This movement is built to resist that.
What warranty does this watch come with?
The SSWA012J comes with a 3-year warranty when purchased from City Chain Singapore, an authorised Seiko retailer. Keep your warranty card and proof of purchase — both are required when submitting the watch for service.
Why Buy from City Chain Singapore
- Authorised Retailer 100% genuine Seiko product
- 3-Year Warranty Covered on every purchase
- Bracelet Adjustment Complimentary sizing in store
- Free Shipping All orders within Singapore
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Caliber No.: 4N30
Movement: Battery-powered quartz
Accuracy: ±15 seconds
Battery life: Approximately 3 years
Case material: Stainless Steel
Case Thickness: 7.0mm
Case Diameter: 21.0mm
Length: 29.2mm
Lug Width: 10.0mm
Glass: Curved sapphire
Glass Coating:
Anti-reflective coating on the interior surface
Three-fold clasp with push button release
Water Resistance: 10 Bar
Magnetic Resistance: 4,800 A/m
Weight: 42.0g
Lab-grown diamond dial
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.
