Seiko Cal. 5640 - 104

This Hand-Winding model from 1993 features a 38mm Two-Tone case. Powered by the 5640 caliber with 18j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-92c3f6a2a1ea]

Also known as: Turtle, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1993

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