Seiko Cal. 7184 - 644

Released in 1971, the Cal. 7184 with design code 644 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-ca698ad71ea4]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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