Seiko Cal. 6671 - 638

The 6671-638 is a sought-after Solar piece from Seiko's golden era. Powered by the 6671 caliber with 23j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-9d10e26937a4]

Also known as: Rally, Navigator

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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