Seiko Cal. 4457 - 843

The 4457-843 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-f1be18be8ff6]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1976

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