Seiko Cal. 6633 - 945

This Hand-Winding model from 1991 features a 38mm Two-Tone case. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-5af0137b40b8]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1991

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