Seiko Cal. 5643 - 894

The Seiko 5643-894 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-5fce0a07e9f5]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1971

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