Seiko Cal. 3877 - 447

This Spring Drive model from 1969 features a 45mm PVD Black case. It features a Silver dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-2b786bbafe13]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1969

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