Seiko Cal. 6617 - 739

The Seiko 6617-739 represents an important milestone in Seiko's 1977 lineup. Powered by the 6617 caliber with 35j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-4b80eebb969d]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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