Seiko Cal. 4428 - 891

Seiko 4428-891

Released in 1978, the Cal. 4428 with design code 891 was part of Seiko's domestic market collection. Powered by the 4428 caliber with 22j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-6263208577a3]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
9.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Navy
Jewels
22j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1978

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seikata-wm-6263208577a3