Seiko Cal. 4540 - 780

The Seiko 4540-780 represents an important milestone in Seiko's 1990 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-8c4344a7e642]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1990

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