Seiko Cal. 4557 - 678

The 4557-678 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-37ca490941ff]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1967

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