Seiko Cal. 5641 - 737

Released in 1984, the Cal. 5641 with design code 737 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-76aeedbfb0af]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1984

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