Seiko Cal. 6660 - 735

Seiko 6660-735

The 6660-735 is a sought-after Solar piece from Seiko's golden era. Powered by the 6660 caliber with 28j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-3c341dba3f93]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
14.0mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
80m
Dial Color
Navy
Jewels
28j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1976

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seikata-wm-3c341dba3f93