Seiko Cal. 6644 - 527

The Seiko 6644-527 represents an important milestone in Seiko's 1965 lineup. Powered by the 6644 caliber with 24j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-d8c8ff91a26c]

Also known as: Monster, Shogun

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1965

Related Models

• Seiko 7027-497
• Seiko 6347-379
• Seiko 6699-959
• Seiko 4594-464
• Seiko 7161-620
• Seiko 7162-443
• Seiko 6178-870
• Seiko 0711-346
• Seiko 7019-514
• Seiko 4451-717
• Seiko 3819-737
• Seiko 6138-229