Seiko Cal. 5641 - 187

The 5641-187 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-9ed69999540d]

Also known as: Samurai, Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1997

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