Seiko Cal. 4456 - 639

The Seiko 4456-639 represents an important milestone in Seiko's 1987 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-37887f4b37af]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1987

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