Seiko Cal. 5639 - 840

The Seiko 5639-840 represents an important milestone in Seiko's 1993 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e635e6b9d0e8]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1993

Related Models

• Seiko 7178-303
• Seiko 4522-248
• Seiko 6655-131
• Seiko 3826-504
• Seiko 4471-742
• Seiko 6199-430
• Seiko 4530-885
• Seiko 4526-175
• Seiko 0779-880
• Seiko 4434-400
• Seiko 6647-781
• Seiko 3877-640