Seiko Cal. 4458 - 731

The 4458-731 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4458 caliber with 25j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-574840774fb9]

Also known as: Bellmatic, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1996

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