Seiko Cal. 6641 - 380

Seiko 6641-380

The 6641-380 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-1a01d64bd5b2]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
9.9mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Silver
Jewels
22j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1978

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