Seiko Cal. 6691 - 837

Seiko 6691-837

This Kinetic model from 1983 features a 45mm Hardlex-Coated Steel case. Powered by the 6691 caliber with 29j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-135e8f72b2f6]

Also known as: Sumo

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
14.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Cream
Jewels
29j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1983

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