Seiko Cal. 6644 - 870

The Seiko 6644-870 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-7e9be90ad1a5]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1966

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