Seiko Cal. 4457 - 639

The 4457-639 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-a70f43954e16]

Also known as: Silverwave, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1978

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