Seiko
Vintage Seiko "Reverso" The Blackdiamond Collection V400-0420 Reversible Watch
Description
A rare design from Seiko’s eccentric archives, this reversible double-dial watch from The Blackdiamond Collection is a playful yet elegant statement of duality. Powered by the minimalist V400 quartz movement, it strips watchmaking down to its essentials—then flips expectations entirely.
On one side, a classic Roman numeral dial in white evokes a refined, almost neoclassical charm. On the other, a sleek, matte black face with polished stick markers and a diamond-shaped hour hand adds a bold, contemporary edge. The rotating case lets you choose your mood, whether formal or avant-garde.
Crafted with a two-tone case—brushed steel paired with a gold-tone bezel—and paired with a black leather strap, this piece balances quirk and class. It’s a prime example of why The Blackdiamond Collection has become a cult favorite: each model in the series brings a unique twist to Seiko’s precision watchmaking.
Key features:
- Reversible case with dual dials – dress up or down with a flip
- Seiko V400 quartz movement – clean, reliable 2-hand timekeeping
- Roman numeral dial vs. minimalist noir dial for dual styling
- Battery life: Up to 3 years (SR516SW)
- Stainless steel case with gold-tone bezel on one side
- From the collectible Blackdiamond Collection – known for its quirky and uncommon designs
Product File
Brand: Seiko
Product: Wristwatch
Collection: Vintage
Movement: Quartz
Display: Analog
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We ship to all major destinations globally, this includes North America, South America, Europe, The Middle East, Everywhere in Asia, Australia, new Zealand etc etc
Processing time: 1–10 business days (pre-orders ship on release date).
Orders are processed within 1–10 business days(excluding weekends and holidays). This does not apply to pre-order items, which will ship according to the release date stated below.Processing time does not include shipping time.
Import duties/taxes/tariffs are not included in the price.
Import duties, taxes, tariffs, and fees are not included in the item price or shipping cost. The Japanese Factory is not responsible for these charges, as they are imposed by your country on you for importing goods from abroad. Please check with your local customs office for details before making a purchase. Please read our Shipping Policy for more details.
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You may choose to pay in full or secure the item with a 50% non-refundable deposit.
If a deposit is selected, the remaining 50% balance must be paid before shipment.
Please note: Deposits are non-refundable in the event of cancellation.
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Vintage Seiko "Reverso" The Blackdiamond Collection V400-0420 Reversible Watch
$500.00