Seiko Cal. 3877 - 254

This Solar model from 1977 features a 39mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-20bfd18beee0]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1977

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