Seiko Cal. 6658 - 521

Seiko 6658-521

This Automatic model from 1984 features a 37mm Hardlex-Coated Steel case. Powered by the 6658 caliber with 32j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-8bb5e75404a8]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1984

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