Seiko Cal. 4557 - 478

The 4557-478 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-735cde8940fd]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1968

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