Seiko Cal. 5657 - 448

This Spring Drive model from 1983 features a 39mm Titanium case. It features a Black dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-9b3c8feb85f9]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1983

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