Seiko Cal. 3864 - 528

This Automatic model from 1980 features a 39mm Hardlex-Coated Steel case. Powered by the 3864 caliber with 34j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-78b7f34a539c]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1980

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