Seiko Cal. 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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