Seiko Cal. 6668 - 721

Seiko 6668-721

This Quartz model from 1974 features a 35mm Two-Tone case. Powered by the 6668 caliber with 23j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-1936757054a6]

Also known as: Helmet

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
23j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1974

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seikata-wm-1936757054a6