Seiko Cal. 5284 - 720

The Seiko 5284-720 represents an important milestone in Seiko's 1983 lineup. It features a Navy dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-33a79a114a72]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1983

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