Seiko Cal. 4550 - 378

The Seiko 4550-378 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-5f2ddbc5a108]

Also known as: Shogun, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1971

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