Seiko Cal. 6644 - 241

The Seiko 6644-241 represents an important milestone in Seiko's 1969 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a0705652aabd]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1969

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