Seiko Cal. 5284 - 784

The Seiko 5284-784 represents an important milestone in Seiko's 1978 lineup. It features a White dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-35a7515fc544]

Also known as: Sumo, Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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