Seiko Cal. 5656 - 690

The Seiko 5656-690 represents an important milestone in Seiko's 1990 lineup. Powered by the 5656 caliber with 31j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-6ec7889f73ac]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1990

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