Seiko Cal. 4551 - 390

The Seiko 4551-390 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-53a01d5f2096]

Also known as: Sumo, Shogun

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1972

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