Seiko Cal. 6633 - 106

The Seiko 6633-106 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-10e8bce3dfa8]

Also known as: Helmet, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1968

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