Seiko Cal. 6378 - 990

The Seiko 6378-990 represents an important milestone in Seiko's 1996 lineup. Powered by the 6378 caliber with 36j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-bdcadb571c72]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1996

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