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