Seiko Cal. 0733 - 521

This Hand-Winding model from 1976 features a 39mm Two-Tone case. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-13f14ce4a58f]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1976

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