Seiko Cal. 3840 - 720

Seiko 3840-720

The 3840-720 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-87a2a228b59b]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
14.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1969

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