Seiko Cal. 6645 - 767

The Seiko 6645-767 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-97b56ff850c1]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1981

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