Seiko Cal. 3815 - 777

The 3815-777 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3815 caliber with 25j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-825ae691a209]

Also known as: Tuna, Pogue

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1979

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