Seiko Cal. 4536 - 172

The Seiko 4536-172 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-7df01803fe47]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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