Seiko Cal. 4442 - 951

The 4442-951 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4442 caliber with 21j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-e96fa531abc6]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1987

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