Seiko Cal. 6691 - 437

Seiko 6691-437

This Quartz model from 1972 features a 42mm Stainless Steel case. Powered by the 6691 caliber with 21j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-094393725769]

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
13.5mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1972

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seikata-wm-094393725769