Seiko Cal. 4521 - 703

This Spring Drive model from 1977 features a 38mm Titanium case. Powered by the 4521 caliber with 30j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-7a4d29f2576f]

Also known as: Samurai, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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