Seiko Cal. 6643 - 752

The Seiko 6643-752 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-26f07ed98b09]

Also known as: Panda

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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