Seiko Cal. 6648 - 309

The 6648-309 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6648 caliber with 36j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-989b1af0bf5b]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1980

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