Seiko Cal. 6618 - 631

Seiko 6618-631

The 6618-631 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6618 caliber with 18j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-728f72c9e0ad]

Also known as: Samurai, Rally

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
120m
Dial Color
Cream
Jewels
18j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1975

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