Seiko Cal. 3888 - 813

This Spring Drive model from 1981 features a 36mm Hardlex-Coated Steel case. Powered by the 3888 caliber with 20j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-be829518cdfa]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1981

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