Seiko Cal. 6665 - 784

Released in 1971, the Cal. 6665 with design code 784 was part of Seiko's domestic market collection. Powered by the 6665 caliber with 28j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-01973db483ee]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1971

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