Seiko Cal. 5657 - 601

Released in 1976, the Cal. 5657 with design code 601 was part of Seiko's domestic market collection. It features a Navy dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-c88c1ed49af9]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1976

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