Seiko Cal. 4440 - 373

The Seiko 4440-373 represents an important milestone in Seiko's 1978 lineup. Powered by the 4440 caliber with 36j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-831bb7e5990c]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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