Seiko Cal. 6646 - 487

The 6646-487 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5cfa2cdbcc53]

Also known as: Bullhead, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1990

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