Seiko Cal. 6284 - 304

The Seiko 6284-304 represents an important milestone in Seiko's 1987 lineup. It features a Black dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-a3e2843c2874]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1987

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