Seiko Cal. 6640 - 705

This Kinetic model from 1972 features a 37mm Two-Tone case. Powered by the 6640 caliber with 26j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-4bed67fa22cf]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1972

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