Seiko Cal. 0777 - 640

Seiko 0777-640

The 0777-640 is a sought-after Solar piece from Seiko's golden era. Powered by the 0777 caliber with 34j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-1210e6a9fc70]

Also known as: Silverwave

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.9mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
White
Jewels
34j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1972

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