Seiko Cal. 3815 - 355

The 3815-355 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3815 caliber with 17j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-155b6fdfc1cb]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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