Seiko Cal. 6640 - 208

The Seiko 6640-208 represents an important milestone in Seiko's 1992 lineup. Powered by the 6640 caliber with 21j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-ea5bd8e1fd49]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1992

Related Models

• Seiko 7150-986
• Seiko 4465-663
• Seiko 6651-904
• Seiko 6391-702
• Seiko 6635-290
• Seiko 0728-752
• Seiko 7158-327
• Seiko 6616-908
• Seiko 0768-939
• Seiko 4469-507
• Seiko 5234-553
• Seiko 3821-198