Seiko Cal. 6655 - 639

Seiko 6655-639

The 6655-639 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6655 caliber with 23j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-d5b2e0208c8e]

Also known as: Tuna, Rally

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
14.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
190m
Dial Color
Burgundy
Jewels
23j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1989

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