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SEIKO 300P02SN02 Sapphire Crystal SNG077J1 - 5J32-0AV0
SEIKO 300P02SN03 Sapphire Crystal SRP899J1 - 4R36-03C0
SEIKO 300P02SN05 Sapphire Crystal 7N43-8240
SEIKO 300P03HN02 Hardlex Crystal 5M62-0BA0
SEIKO 300P03HN03 Hardlex Crystal 5M42-0L60
SEIKO 300P03JN03 Hardlex Crystal 7N42-9070
SEIKO 300P03L80A Hardlex Crystal SKS171P1 - V657-9089
SEIKO 300P03LF0A Hardlex Crystal PXH243X1 - VX42-X066
SEIKO 300P03LN02 Hardlex Crystal 7T32-0AC0
SEIKO 300P03LN03 Hardlex Crystal SKA141P1 - 5M42-0L60
SEIKO 300P03TN03 Mineral Crystal 7T32-7E90
Sold outSEIKO 300P04HB0A Hardlex Crystal SKJ291P1 - 5M43-0F30
SEIKO 300P03TNC3 Mineral Crystal SCFT001 - 5M22-6C20
SEIKO 300P04HD0A Hardlex Crystal SNA275P9 - 7T62-0CE0
SEIKO 300P04HN02 Hardlex Crystal 5J32-0AF0
SEIKO 300P04LN03 Hardlex Crystal 7N32-0M90
SEIKO 300P04HN03 Hardlex Crystal SRP289J1 - 4R36-01D0
SEIKO 300P05LN03 Hardlex Crystal WFY203J1 - 7123-8340
Sold outSEIKO 300P05SB01 Sapphire Crystal 8N65-9000
SEIKO 300P08SB02 Sapphire Crystal SBBW005 - 5M23-6A20
Sold outSEIKO 300P10SC01 Sapphire Crystal 9F83-9A20
SEIKO 300P12SN03 Sapphire Crystal SJQ017P1 - 7N47-9A00
SEIKO 300P14SB02 Sapphire Crystal SBDW009 - 5M65-0A40
Sold outSEIKO 300P14SB0A Sapphire Crystal 300P14SB0A
SEIKO 300P18HR03 Hardlex Crystal SDWE13P1 - 7T32-6L50
SEIKO 300P18LR03 Hardlex Crystal PXD607P1 - 7N32-0S40
SEIKO 300P18LZ0C Hardlex Crystal PUG002P1 - Y911-0A60
SEIKO 300P20JR02 Hardlex Crystal SKH365J1 - 5M42-0E70
SEIKO 300P20HN02 Hardlex Crystal SGEA85P1 - 7N42-0BT0
SEIKO 300P20LN02 Hardlex Crystal 7T11-0AJ0
SEIKO 300P20SR02 Sapphire Crystal SBVA001 - 5J22-0A70
SEIKO 300P22JR02 Hardlex Crystal SKH377J1 - 5M42-0F20
SEIKO 300P28HB0A Hardlex Crystal 7T62-0AA0
SEIKO 300P28HN02 Hardlex Crystal 5M62-0BF0
SEIKO 300P28J20A Hardlex Crystal SNXE13K1 - 7S26-01A0
SEIKO 300P28HN03 Hardlex Crystal SKA073P1 - 5M62-0B70
SEIKO 300P28J20C Hardlex Crystal SNXE11K1 - 7S26-01A0
SEIKO 300P28LN03 Hardlex Crystal V743-9A40
SEIKO 300P29HN02 Hardlex Crystal SCFF005 - 4S12-0010
SEIKO 300P30HN02 Hardlex Crystal SGE791P1 - 7N42-0BB0
SEIKO 300P30LN03 Hardlex Crystal SNA027P1 - 7T62-0AH0
Sold outSEIKO 300P34SB0A Sapphire Crystal SCVN001 - 4S15-7040
SEIKO 300P37HN02 Hardlex Crystal FANQ019 - V33J-0030
SEIKO 300P38SB0A Sapphire Crystal SATC003 - 7T62-0A40
Sold outSEIKO 300P40HC0A Hardlex Crystal SKA177P1 - 5M62-0AC0
Sold outSEIKO 300P40HN02 Hardlex Crystal SKA173P1 - 5M62-0AB0
SEIKO 300P42JN03 Hardlex Crystal SNA005J1 - 7T62-0B10
SEIKO 300P43HN03 Hardlex Crystal 7S26-0350

Genuine Watch Parts & Components for Seiko, Citizen, and More – Available at WatchPlaza

Welcome to WatchPlaza, your trusted source for authentic replacement watch parts for Seiko, Citizen, and other leading watch brands. Whether you're a professional watchmaker, a collector, or a DIY enthusiast, you'll find a vast and carefully curated selection of genuine parts to repair, restore your watch with confidence.

🔧 What You'll Find in Our Watch Parts Collection

We stock thousands of new and original spare parts, with a primary focus on Seiko watches. Our catalog includes both modern and vintage components for a wide range of models, including mechanical, automatic, and quartz timepieces.

You can shop the following categories:

  • Dials – Classic, modern, diver-style, and limited edition watch dials

  • Bezels & Lunettes – Including complete bezel assemblies and bezel inserts

  • Hands (Pointers) – Hour, minute, and second hands in various designs and lume types

  • Chapter Rings & Dial Rings – For precise alignment and aesthetic enhancement

  • Watch Cases – Complete case sets or individual case components

  • Crowns & Stems – For setting time and winding the movement

  • Crystals – Flat, domed, or curved glass in sapphire, Hardlex, or mineral

  • Movements – Complete calibers and individual components (e.g., rotors, bridges, wheels)

  • Shrouds / Case Protectors – Often used in diver or sports models

  • Click Springs & Ratchets – Key parts for rotating bezels and mechanical functions

  • Gaskets / O-Rings – Ensure water resistance and case sealing

  • Pins & Spring Bars – To attach straps or bracelets securely

  • Screws, Pushers, Battery Covers – Small but essential components for fine repairs

  • Watch Straps & Bracelets – Leather, rubber, steel, and titanium options

We’re continuously adding new stock, so be sure to check back often for updates.


🧭 Understanding Watch Parts: The Anatomy of a Timepiece

Every wristwatch, no matter how simple or advanced, consists of multiple interdependent components. Here's a breakdown of the most essential ones:

1. Movement / Caliber

The movement is the internal engine of the watch, responsible for keeping accurate time and powering additional features. Movements may be:

  • Quartz – Battery-powered and extremely accurate

  • Mechanical – Powered by a mainspring and regulated by a balance wheel

  • Automatic – Self-winding via the wearer's motion

  • Spring Drive (Seiko) – A unique hybrid combining quartz regulation with mechanical power

2. Dial (Watch Face)

The dial shows the time and often includes:

  • Hour markers, subdials, and date windows

  • Decorative elements such as sunburst finishes, textures, or applied indices

3. Hands

Available in various shapes and finishes (sword, dauphine, baton, etc.), watch hands indicate the time and can reflect the design era or type (diver, dress, pilot).

4. Case

The case protects the movement and other internal components. Materials vary from:

  • Stainless steel

  • Titanium

  • Ceramic

  • Plastic or resin (in sport watches)

5. Crystal

The transparent cover that protects the dial. Options include:

  • Hardlex – A hardened mineral crystal developed by Seiko

  • Sapphire – Extremely scratch-resistant

  • Acrylic – Lightweight and shatter-resistant

6. Crown

Located on the side of the case, the crown allows users to wind the watch, set the time, and, in some models, adjust complications.

7. Case Back & Gaskets

Often screwed or snapped on, the case back includes gaskets to ensure water resistance. Transparent case backs reveal the movement in display models.

8. Straps / Bracelets

Connect the watch to your wrist. Common materials include:

  • Leather (smooth, crocodile, suede)

  • Stainless steel (Oyster, Jubilee, mesh)

  • Rubber or silicone (ideal for sports and diving)

  • NATO and Zulu (durable, military-style options)


🕰️ Most Essential Watch Parts for Functionality

While all parts are important, the following are particularly crucial for a functioning, wearable watch:

  • Movement / Caliber – The heart of the watch

  • Dial & Hands – For time display and aesthetic identity

  • Crystal – Protects the dial and hands

  • Crown – For manual control of time and date

  • Case – The housing that secures everything

  • Strap or Bracelet – Keeps the watch on your wrist


📦 Where to Buy Watch Parts

1. Online Retailers

Reputable sites like WatchPlaza.com specialize in brand-specific watch parts. We offer a secure shopping experience, fast worldwide shipping, and verified original parts.

2. Watchmakers & Repair Shops

Watch repair professionals often have access to rare or discontinued parts, especially for vintage models.

3. Authorized Brand Service Centers

If you own a luxury or high-end model, always go through the brand's authorized service center to preserve authenticity and warranty.

4. Auction Platforms (with caution)

Websites like eBay may offer rare components, but always verify the seller’s reputation and part authenticity.

5. Salvage or Vintage Markets

Useful for finding hard-to-source or discontinued components, but be wary of quality and condition. 


🔍 What You Can Get at WatchPlaza

At WatchPlaza.com, we focus heavily on Seiko parts, offering everything from:

  • 6R15, 4R35, NH35, NE15 movements

  • SARB, SKX, Sumo, Turtle, Samurai and other iconic model components

  • Bezel inserts, chapter rings, crown tubes, movement spacers, and more

We also stock:

  • Citizen parts, including Eco-Drive movements, dials, crystals, and crowns

  • Select parts for Breil, Pulsar, Lorus, Diesel, Fossil, Armani, Casio, Burberry, DKNY, Zodiac, Michael Kors, Guess, and others


📩 Can’t Find What You’re Looking For?

If a specific part is not listed, feel free to contact us directly with a product request. Our team will do its best to locate or suggest a suitable alternative from our extensive inventory.