Seiko Cal. 4441 - 438

The 4441-438 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4441 caliber with 20j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-12767936ee95]

Also known as: Bullhead, World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1973

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