Seiko Cal. 3815 - 704

The 3815-704 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3815 caliber with 19j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-7836ca3134c2]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1965

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