Seiko Cal. 6647 - 613

The 6647-613 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6647 caliber with 36j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-58793278da50]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1965

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