Seiko Cal. 6640 - 860

This Hand-Winding model from 1999 features a 46mm PVD Black case. Powered by the 6640 caliber with 28j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-89de4b2d3e96]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1999

Related Models

• Seiko 3838-978
• Seiko 5298-192
• Seiko 6633-851
• Seiko 6215-549
• Seiko 7184-572
• Seiko 4419-293
• Seiko 5241-735
• Seiko 6291-672
• Seiko 7198-442
• Seiko 6187-797
• Seiko 6625-532
• Seiko 6144-661