Seiko Cal. 6378 - 990

Seiko 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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