Seiko Cal. 6632 - 670

The Seiko 6632-670 represents an important milestone in Seiko's 1965 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-a106ec3014b1]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1965

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