Seiko Cal. 3878 - 370

Released in 1976, the Cal. 3878 with design code 370 was part of Seiko's domestic market collection. Powered by the 3878 caliber with 28j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-69c73ab9eba4]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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