Seiko Cal. 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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