Seiko Cal. 4537 - 547

This Hand-Winding model from 1977 features a 42mm Titanium case. Powered by the 4537 caliber with 30j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-fba56eb82895]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1977

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