Seiko Cal. 3878 - 985

The 3878-985 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3878 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-bd230ad12b60]

Also known as: Tuna, Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1993

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