Seiko Cal. 6378 - 754

The 6378-754 is a sought-after Solar piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-504c90c9d19c]

Also known as: Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1972

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