Seiko Cal. 6637 - 256

The 6637-256 is a sought-after Solar piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-c6052bb329cc]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1988

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