Seiko Cal. 3878 - 620

Released in 1969, the Cal. 3878 with design code 620 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-267174df3576]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1969

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