Seiko Cal. 4591 - 630

Seiko 4591-630

The 4591-630 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4591 caliber with 20j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-f5837a8de2e4]

Also known as: Monster, Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
12.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
160m
Dial Color
Black
Jewels
20j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1993

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