Seiko Cal. 3879 - 728

The Seiko 3879-728 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-ce7dbe35210b]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1984

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