Seiko Cal. 3826 - 657

Seiko 3826-657

The 3826-657 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3826 caliber with 33j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-f2595ca25805]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
9.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Cream
Jewels
33j
Frequency
21,600 bph
Power Reserve
54 hours
Year
1975

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