Seiko Cal. 6640 - 884

This Hand-Winding model from 1967 features a 35mm Two-Tone case. Powered by the 6640 caliber with 17j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-e656e314f6f0]

Also known as: Samurai, Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1967

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