Seiko Cal. 6637 - 739

The 6637-739 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-b23f685bae22]

Also known as: Sea Horse, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1992

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