Seiko Cal. 6644 - 189

This Spring Drive model from 1970 features a 46mm PVD Black case. Powered by the 6644 caliber with 35j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-cf272e913d04]

Also known as: Turtle, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1970

Related Models

• Seiko 6340-681
• Seiko 6364-680
• Seiko 7119-624
• Seiko 3812-681
• Seiko 6273-765
• Seiko 4597-606
• Seiko 6323-964
• Seiko 5665-215
• Seiko 5699-208
• Seiko 5289-335
• Seiko 0758-671
• Seiko 6379-310