Seiko Cal. 5231 - 721

Seiko 5231-721

This Automatic model from 1966 features a 34mm Two-Tone case. Powered by the 5231 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-caec65c59b68]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
34mm
Case Thickness
9.2mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
17j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1966

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