Seiko Cal. 6644 - 104

This Automatic model from 1978 features a 41mm Two-Tone case. Powered by the 6644 caliber with 17j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-9742c4955106]

Also known as: Tuna, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1978

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