Seiko Cal. 6646 - 879

The 6646-879 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6646 caliber with 35j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-ec37c7c8400d]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1985

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