Seiko Cal. 5640 - 411

The Seiko 5640-411 represents an important milestone in Seiko's 1982 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f5a4c9519a17]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1982

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