Seiko Cal. 6644 - 590

Seiko 6644-590

The Seiko 6644-590 represents an important milestone in Seiko's 1983 lineup. Powered by the 6644 caliber with 24j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-a52cac0623ff]

Also known as: UFO, Navigator

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
36mm
Case Thickness
11.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Navy
Jewels
24j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1983

Related Models

seikata-wm-a52cac0623ff