Seiko Cal. 4457 - 247

The Seiko 4457-247 represents an important milestone in Seiko's 1986 lineup. It features a Black dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-1ca47718541e]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1986

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