Seiko Cal. 6658 - 707

Seiko 6658-707

The Seiko 6658-707 represents an important milestone in Seiko's 1970 lineup. Powered by the 6658 caliber with 23j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-b6028bf154b0]

Also known as: UFO, Silverwave

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
110m
Dial Color
Silver
Jewels
23j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1970

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