Seiko Cal. 6644 - 597

Seiko 6644-597

The 6644-597 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6644 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-315caf02cfa5]

Also known as: Samurai, Monster

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
10.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Navy
Jewels
27j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1976

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