Seiko Cal. 5284 - 426

The Seiko 5284-426 represents an important milestone in Seiko's 1987 lineup. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-1e9d471c4a7c]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1987

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