Seiko Cal. 6645 - 546

The Seiko 6645-546 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-68d4ffab6ae4]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1979

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