Seiko Cal. 6378 - 551

Seiko 6378-551

The 6378-551 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6378 caliber with 36j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-692387d181dc]

Also known as: UFO

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
15.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Navy
Jewels
36j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1998

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seikata-wm-692387d181dc