Seiko Cal. 4521 - 105

The Seiko 4521-105 represents an important milestone in Seiko's 1978 lineup. Powered by the 4521 caliber with 20j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-4583422bf437]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1978

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