Seiko Cal. 6391 - 682

This Solar model from 1970 features a 44mm PVD Black case. Powered by the 6391 caliber with 31j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-9b5d0e1e7483]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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