Seiko Cal. 4450 - 724

This Spring Drive model from 1982 features a 36mm Hardlex-Coated Steel case. Powered by the 4450 caliber with 21j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-3639f1f3e73f]

Also known as: Bellmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1982

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