Seiko Cal. 4551 - 503

This Automatic model from 1976 features a 40mm Two-Tone case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-c13ae939ffc2]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1976

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