Seiko Cal. 6640 - 374

Seiko 6640-374

This Kinetic model from 1974 features a 37mm Hardlex-Coated Steel case. Powered by the 6640 caliber with 29j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-f246d851ebb9]

Also known as: Samurai

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
170m
Dial Color
Silver
Jewels
29j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1974

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