Seiko Cal. 5647 - 381

Released in 1971, the Cal. 5647 with design code 381 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-7d5161ede0ac]

Also known as: Sumo, Shogun

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1971

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