Seiko Cal. 5284 - 291

Seiko 5284-291

Released in 1980, the Cal. 5284 with design code 291 was part of Seiko's domestic market collection. Powered by the 5284 caliber with 26j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-523b8fca0e5d]

Also known as: Sumo, Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
170m
Dial Color
Green
Jewels
26j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1980

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