Seiko Cal. 6391 - 146

The 6391-146 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6391 caliber with 26j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-77ba399234d3]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1968

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