Seiko Cal. 3815 - 542

The Seiko 3815-542 represents an important milestone in Seiko's 1971 lineup. With its 20mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-9bab3476dd3d]

Also known as: Tuna, Rally

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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