Seiko Cal. 6121 - 741

This Spring Drive model from 1970 features a 35mm Stainless Steel case. With its 22mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-ad1008c6f01b]

Also known as: Tuna, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1970

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