Seiko Cal. 4477 - 550

The Seiko 4477-550 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-a0256ee3a7c0]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1971

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