Seiko Cal. 4537 - 181

Released in 1978, the Cal. 4537 with design code 181 was part of Seiko's domestic market collection. With its 21mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-225c7e9ab1cd]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1978

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