Seiko Cal. 6634 - 331

Seiko 6634-331

The Seiko 6634-331 represents an important milestone in Seiko's 1997 lineup. Powered by the 6634 caliber with 32j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-851437ad2fb1]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
15.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
70m
Dial Color
Cream
Jewels
32j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1997

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