Seiko Cal. 3878 - 540

This Quartz model from 1990 features a 35mm Hardlex-Coated Steel case. Powered by the 3878 caliber with 23j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-1a98bbf6c17b]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1990

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