Seiko Cal. 6637 - 340

The 6637-340 is a sought-after Automatic piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-d1e26aecd4bc]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1970

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