Seiko Cal. 4577 - 781

The 4577-781 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4577 caliber with 21j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-51c2176fcfa9]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1980

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