Seiko Cal. 4430 - 641

Released in 1995, the Cal. 4430 with design code 641 was part of Seiko's domestic market collection. Powered by the 4430 caliber with 24j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-20df2cc2f6b3]

Also known as: Bellmatic, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1995

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