Seiko Cal. 5641 - 523

Released in 1991, the Cal. 5641 with design code 523 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-94feff76fabb]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1991

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