Seiko Cal. 0731 - 858

Seiko 0731-858

The 0731-858 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0731 caliber with 35j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-bfacbceee4e8]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
36mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
30m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1986

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