Seiko Cal. 0766 - 509

Seiko 0766-509

The 0766-509 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0766 caliber with 35j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-f2733ac34bda]

Also known as: Bullhead, Navigator

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
41mm
Case Thickness
13.5mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
35j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1993

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