Seiko Cal. 5661 - 538

This Kinetic model from 1974 features a 37mm Two-Tone case. With its 19mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-dcfeeca51acb]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1974

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