Seiko Cal. 6378 - 486

This Quartz model from 1997 features a 40mm Stainless Steel case. Powered by the 6378 caliber with 34j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-ff500128eb21]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1997

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