Seiko Cal. 3847 - 740

This Hand-Winding model from 1988 features a 40mm Hardlex-Coated Steel case. Powered by the 3847 caliber with 33j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-63c84b9f2b84]

Also known as: Goldfeather, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1988

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