Seiko Cal. 3815 - 555

The Seiko 3815-555 represents an important milestone in Seiko's 1974 lineup. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-7ebd0383f39b]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1974

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