Seiko Cal. 5644 - 368

The 5644-368 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5644 caliber with 21j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-fef9973cc864]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1995

Related Models

• Seiko 6196-106
• Seiko 6679-304
• Seiko 6611-401
• Seiko 6619-236
• Seiko 6696-471
• Seiko 6215-662
• Seiko 5615-476
• Seiko 3846-970
• Seiko 6257-600
• Seiko 7146-663
• Seiko 6671-151
• Seiko 5641-964