Seiko Cal. 6378 - 770

The 6378-770 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6378 caliber with 24j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-588a05862555]

Also known as: Pogue, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1975

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