Seiko Cal. 6637 - 612

The 6637-612 is a sought-after Solar piece from Seiko's golden era. Powered by the 6637 caliber with 24j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-8ac3ffd166d1]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1991

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