Seiko Cal. 3878 - 657

The 3878-657 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3878 caliber with 31j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-b8e38883f8c1]

Also known as: Tuna, Silverwave

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1976

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