Seiko Cal. 4428 - 544

Released in 1991, the Cal. 4428 with design code 544 was part of Seiko's domestic market collection. Powered by the 4428 caliber with 34j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-499753d438a6]

Also known as: Shogun, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1991

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