Seiko Cal. 4441 - 428

The 4441-428 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4441 caliber with 23j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-7faf21c71df1]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1998

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