Seiko Cal. 4477 - 652

This Spring Drive model from 1971 features a 39mm Titanium case. Powered by the 4477 caliber with 23j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-3643c0949155]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1971

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