Seiko Cal. 6644 - 770

The Seiko 6644-770 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-da62e2aeb9aa]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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