Seiko Cal. 4521 - 948

The 4521-948 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-c17ff4762e44]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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