Seiko Cal. 3878 - 816

This Spring Drive model from 1990 features a 39mm Hardlex-Coated Steel case. Powered by the 3878 caliber with 32j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-be341313fa8a]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1990

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