Seiko Cal. 4450 - 837

The Seiko 4450-837 represents an important milestone in Seiko's 1966 lineup. Powered by the 4450 caliber with 24j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-2294537797fb]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1966

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