Seiko Cal. 3815 - 355

Seiko 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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