Seiko Cal. 3818 - 697

Seiko 3818-697

The 3818-697 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3818 caliber with 20j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-2cb5cccc0ab9]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1986

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