Seiko Cal. 3815 - 378

The 3815-378 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3815 caliber with 24j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-0f0fc7e5306d]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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