Seiko Cal. 6398 - 178

The 6398-178 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6398 caliber with 33j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-8dd3ec5baa3e]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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