Seiko Cal. 4577 - 781

The Seiko 4577-781 represents an important milestone in Seiko's 1966 lineup. Powered by the 4577 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-02faf71ac401]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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