Seiko Cal. 6691 - 376

Seiko 6691-376

This Automatic model from 1973 features a 43mm Hardlex-Coated Steel case. Powered by the 6691 caliber with 21j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-8a3f9208ce52]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
White
Jewels
21j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1973

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