Seiko Cal. 6178 - 643

Released in 1975, the Cal. 6178 with design code 643 was part of Seiko's domestic market collection. Powered by the 6178 caliber with 36j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-219cd4ac1309]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1975

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