Seiko Cal. 3887 - 998

This Hand-Winding model from 1977 features a 42mm Hardlex-Coated Steel case. Powered by the 3887 caliber with 21j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-a49a6a865ebe]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1977

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