Seiko Cal. 5644 - 235

The Seiko 5644-235 represents an important milestone in Seiko's 1972 lineup. Powered by the 5644 caliber with 32j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-1cbb17928527]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1972

Related Models

• Seiko 7058-724
• Seiko 4589-899
• Seiko 7059-852
• Seiko 4438-115
• Seiko 3827-724
• Seiko 7099-180
• Seiko 5685-130
• Seiko 6392-403
• Seiko 6264-762
• Seiko 4425-685
• Seiko 6173-562
• Seiko 4526-715