Seiko Cal. 5640 - 403

This Spring Drive model from 1994 features a 44mm Two-Tone case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-37ac58d9fa18]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1994

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