Seiko Cal. 6637 - 230

The Seiko 6637-230 represents an important milestone in Seiko's 1996 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-337c6ba1dc8b]

Also known as: Silverwave, Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1996

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