Seiko Cal. 4550 - 397

The 4550-397 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-c20f4ef176f6]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1986

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