Seiko Cal. 6637 - 335

The Seiko 6637-335 represents an important milestone in Seiko's 1987 lineup. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-813cd1276cf6]

Also known as: Shogun, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1987

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