Seiko Cal. 6646 - 656

The Seiko 6646-656 represents an important milestone in Seiko's 1988 lineup. It features a Cream dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-51cb64f92b6a]

Also known as: Bullhead, Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1988

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