Seiko Cal. 5671 - 536

This Spring Drive model from 1989 features a 40mm Two-Tone case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-b5846d9361c1]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1989

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