Seiko Cal. 6644 - 725

Seiko 6644-725

This Spring Drive model from 1999 features a 39mm Stainless Steel case. Powered by the 6644 caliber with 20j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-3b0fbb336e18]

Also known as: Helmet, Emperor

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
10.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
170m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1999

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