Seiko Cal. 5651 - 637

The Seiko 5651-637 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-0d9840fce098]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1987

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