Seiko Cal. 6634 - 633

Seiko 6634-633

The Seiko 6634-633 represents an important milestone in Seiko's 1991 lineup. Powered by the 6634 caliber with 23j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-2652cc62f86e]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
8.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1991

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