Seiko Cal. 6640 - 737

This Kinetic model from 1999 features a 36mm Stainless Steel case. Powered by the 6640 caliber with 26j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-27200ae496ca]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1999

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