Seiko Cal. 6634 - 623

This Hand-Winding model from 1974 features a 41mm Two-Tone case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-2ebeced8e5aa]

Also known as: Turtle, Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1974

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