Seiko Cal. 5641 - 940

Released in 1965, the Cal. 5641 with design code 940 was part of Seiko's domestic market collection. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-d2a32c15d10b]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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