Seiko Cal. 6397 - 657

Seiko 6397-657

This Hand-Winding model from 1972 features a 34mm Stainless Steel case. Powered by the 6397 caliber with 20j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-27741eade98b]

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
12.1mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Black
Jewels
20j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1972

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seikata-wm-27741eade98b