Seiko Cal. 3878 - 377

The Seiko 3878-377 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-8965e44a710e]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1991

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