Seiko Cal. 4577 - 744

The 4577-744 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-dd9e2765d462]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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