Seiko Cal. 4550 - 121

The Seiko 4550-121 represents an important milestone in Seiko's 1992 lineup. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-0d9b1cf11e5d]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1992

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