Seiko Cal. 4555 - 810

This Hand-Winding model from 1981 features a 36mm Hardlex-Coated Steel case. Powered by the 4555 caliber with 34j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-dbeb82e4fa01]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1981

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