Seiko Cal. 4428 - 546

The Seiko 4428-546 represents an important milestone in Seiko's 1994 lineup. Powered by the 4428 caliber with 29j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-31eb69de8c26]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1994

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