Seiko Cal. 6121 - 438

The 6121-438 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-e23283e0a7d5]

Also known as: Rally, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1973

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