Seiko Cal. 5644 - 234

The Seiko 5644-234 represents an important milestone in Seiko's 1987 lineup. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-73eb75b9b6b7]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1987

Related Models

• Seiko 6325-258
• Seiko 6186-112
• Seiko 6349-242
• Seiko 5211-138
• Seiko 6240-662
• Seiko 6632-605
• Seiko 0799-903
• Seiko 4532-543
• Seiko 0735-686
• Seiko 3888-175
• Seiko 6314-403
• Seiko 6185-239