Seiko Cal. 4550 - 991

This Spring Drive model from 1999 features a 37mm PVD Black case. It features a Champagne dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-4e345ba1f530]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1999

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