Seiko Cal. 6693 - 557

Seiko 6693-557

This Automatic model from 1972 features a 37mm Hardlex-Coated Steel case. Powered by the 6693 caliber with 27j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-4e5d05b679c9]

Also known as: Tuna, Pogue

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Silver
Jewels
27j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1972

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