Seiko Cal. 5657 - 308

This Automatic model from 1973 features a 37mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-9a49c5c79653]

Also known as: Tuna, Goldfeather

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1973

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