Seiko Cal. 5237 - 730

The Seiko 5237-730 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-134bcee896ed]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1981

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