Seiko Cal. 5643 - 177

The 5643-177 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5643 caliber with 27j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-535e7166664c]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1986

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