Seiko Cal. 5284 - 312

Seiko 5284-312

The 5284-312 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5284 caliber with 29j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-d059e56a0506]

Also known as: Bellmatic, Emperor

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
37mm
Case Thickness
15.8mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Burgundy
Jewels
29j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1987

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