Seiko Cal. 6645 - 789

Released in 1972, the Cal. 6645 with design code 789 was part of Seiko's domestic market collection. With its 22mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-a14af62215fa]

Also known as: Bullhead, Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1972

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