Seiko Cal. 5678 - 284

The 5678-284 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-a872955e25eb]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1985

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