Seiko Cal. 4477 - 718

The 4477-718 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4477 caliber with 18j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-590a40b54e8a]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1971

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