Seiko Cal. 6644 - 713

The Seiko 6644-713 represents an important milestone in Seiko's 1976 lineup. Powered by the 6644 caliber with 22j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-ab1dbd6c30bc]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1976

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