Seiko Cal. 6671 - 690

The 6671-690 is a sought-after Solar piece from Seiko's golden era. Powered by the 6671 caliber with 20j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-f71cede73275]

Also known as: Monster, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

35mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1986

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