Seiko Cal. 6644 - 256

The Seiko 6644-256 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-838dac233f1c]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1969

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