Seiko Cal. 3815 - 150

The 3815-150 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3815 caliber with 17j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-9380f7e41cb5]

Also known as: Tuna, Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1971

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