Seiko Cal. 6640 - 423

This Kinetic model from 1994 features a 41mm Two-Tone case. Powered by the 6640 caliber with 23j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-b64d0d859051]

Also known as: Turtle, Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1994

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