Master works MW09 Quadrangle 001 Watch Ivory

Master Works MW09 Quadrangle

Premium Japanese Master Works Craftsmanship Meets Italian Elegance

The Master Works MW09 Quadrangle is a Made in Japan automatic watch built around the rare Seiko Epson YN77 movement, set in a distinctive quadrangle-shaped case and finished with a handcrafted Italian leather strap. For urban creative professionals and style-conscious wearers in their 20s to 40s who want an authentic mechanical watch with reliable automatic performance and a design that stands apart from generic quartz options, it offers Japanese craftsmanship with a sharper, more individual presence on the wrist.

Born from the Master Works philosophy of uniting master artisans and their works across the world, the MW09 channels cross-continental excellence into a watch that refuses to blend in. This overview looks at what sets it apart in daily wear: its case and dial construction, the Japanese automatic movement and power reserve indicator, the Italian leather strap, practical care and maintenance, warranty coverage, and where to buy it through Bang On.

Master Works was founded in 2018 in Japan with a singular mission: bring together outstanding materials, workmanship, and original design to create genuine masterpieces. The brand name itself reflects this - MASTER (匠, the artisan) + WORKS (作品, the work). With design direction from Diego Bottger, whose background spans the Swiss watch industry, every detail of the MW09 serves a purpose, from the layered dial to the four-piece case construction.

Why You'll Love It

• Japan Made YN77 Seiko Epson Automatic Movement – A reliable 22-jewel automatic calibre with a 42-hour power reserve and a built-in power reserve indicator, so you always know how much energy remains in the mainspring.

• Distinctive Quadrangle Case Design – Not round, not simply rectangular. The MW09's architectural case shape commands attention on the wrist without overwhelming it.

• 316L Stainless Steel Construction – High-grade stainless steel delivers corrosion resistance and takes a strong polish, built for everyday durability that lasts.

• Handcrafted Italian Leather Strap – Made in Italy from a specialist atelier near Bologna, with an Alcantara lining for superior comfort against the skin. Width measures 18mm at the lugs.

• Compact 35.8 × 46.5mm Case Size – The moderate width works comfortably across various wrist sizes, while the lug-to-lug length provides a confident visual presence.

What Makes It Different

Most dress watches in this range either rely on quartz movements or skip useful complications entirely. The Master Works MW09 Quadrangle is built differently:

• Power Reserve Indicator on an Automatic Movement – Many watches at this price point omit this complication. The MW09 gives you a visible cue when it's time to wear or wind the watch, adding both functional value and mechanical complexity.

• Quadrangle Case Shape – While the world of watchmaking gravitates toward round cases, the MW09's quadrangle silhouette and four-piece construction (bezel, housing, lugs, caseback) create architectural depth rarely seen outside higher-priced luxury pieces.

• Transparent Movement Sourcing – Where many microbrands vaguely cite "Japan movement," Master Works specifies the Seiko Epson YN77 calibre - a movement tied to the Seiko Group's decades of horological engineering. This is a calibre typically reserved for select brands, making it genuinely uncommon in the broader market.

• Authentic Made in Japan Craftsmanship – From case finishing to assembly, the MW09 carries genuine Japan quality rather than mass-produced shortcuts.

• Authorized Retailer Guarantee – Purchased through Bang On, an authorized retailer that emphasizes authenticity and direct brand sourcing, you receive a genuine product backed by official warranty coverage.

How It Works

1. Unbox and Set The MW09 arrives in Master Works original packaging for authenticity. Set the time and date using the crown, then give the crown a few turns to manually wind the mainspring for its first wear.

2. Wear and Wind Automatically Once on your wrist, the YN77 automatic movement winds itself through the natural motion of daily wear - no battery needed. The magic lever winding system efficiently converts movement into stored energy.

3. Monitor Your Power Reserve Glance at the built-in power reserve indicator to see approximately how much of the 42-hour reserve remains. If the watch has been off-wrist for an extended period, a few manual winds bring it back to life.

4. Maintain with Care Keep the Italian leather strap dry and conditioned. Rotate usage when possible to extend strap life. Service the movement every 3–5 years to maintain precision and longevity.

Product Details

• Movement: Japan made YN77 Seiko Epson Automatic, 22 jewels

• Power Reserve: 42 hours with indicator

• Case Material: 316L Stainless Steel

• Case Size: 35.8 × 46.5mm

• Case Construction: Four-piece (bezel, housing, lugs, caseback) with mirror polish, hairline brush, and sandblast finishes

• Dial: Layered two-tier dial with applied Roman numeral indices

• Strap: Made in Italy leather with Alcantara® lining, width 18mm

• Water Resistance: 50 meters (5ATM)

• Origin: Made in Japan

• Warranty: One-year official warranty

• Included: Watch, original Master Works packaging, warranty documentation

Master Works watches include original packaging for authenticity, and every piece purchased through Bang On comes with full warranty coverage.

Who It's For

Ideal for:

• Urban creative professionals who want a timepiece with genuine design distinction - not another round watch from a generic brand

• Watch enthusiasts who appreciate Japanese automatic movements and the heritage of the Seiko Epson calibre family

• Style-conscious individuals drawn to unique case shapes that pair equally well with blazers and minimalist fashion

• Those who value authentic craftsmanship over mass production, and want to know exactly what's inside their watch

• Professionals aged 20 to 40 seeking a reliable daily wear piece with character and mechanical soul

If you want a watch that merges the precision of Japan with the elegance of Italian leatherwork in a form factor the world doesn't see every day, the MW09 fits your needs. For more options in this space, explore our Master Works collection or browse our broader watch selection.

Frequently Asked Questions

How do I maintain the automatic movement? Wear the MW09 regularly to keep it wound. If left unworn for more than 42 hours, manually wind it via the crown. Professional servicing every 3–5 years keeps the movement running accurately.

What does the power reserve indicator do? It shows how much stored energy remains in the mainspring, displayed directly on the dial. When the indicator approaches empty, wear the watch or wind it manually to restore full power.

Can I replace the strap? Yes. The 18mm lug width accepts standard aftermarket straps. However, the set-through strap design and quadrangle case shape mean a properly fitting strap - similar to the original Italian leather - will look best.

What does the one-year official warranty cover? The warranty covers manufacturing defects in the movement and case. Bang On emphasizes authenticity and direct brand sourcing, so your purchase is backed by a genuine manufacturer warranty.

Is this an authentic Master Works product? Absolutely. Bang On is an authorized retailer with direct brand relationships. Every MW09 ships with original packaging, documentation, and warranty card. Bang On curates products that balance aesthetics and functionality - their product assortment is intentionally selective rather than exhaustive.

Do you ship internationally? Bang On offers international shipping via DHL, UPS, or FedEx to regions accepting DHL international services. Free local delivery is available to over 100 locations in Hong Kong, and orders over HKD 500 qualify for free shipping in Hong Kong. Customers can also choose in-store pickup for their orders.

Ready to Add This to Your Collection?

Stop settling for generic quartz watches that disappear on the wrist. The Master Works MW09 Quadrangle delivers a Japan-made automatic movement, architectural case design, and Italian leather craftsmanship in one distinctive package.

Bang On specializes in curated lifestyle ecommerce retail, featuring design-led watches, bags, and photography accessories for consumers who value style combined with functionality. As a trusted destination for stylish products, Bang On targets urban creative professionals who appreciate authentic, well-made goods.

Bang On offers international shipping and free local delivery options - with secure checkout and full warranty support.