Seiko Cal. 5657 - 750

The Seiko 5657-750 represents an important milestone in Seiko's 1972 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-d9ea6e200131]

Also known as: Tuna, Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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