Seiko Cal. 5661 - 493

This Spring Drive model from 1998 features a 46mm Titanium case. Powered by the 5661 caliber with 31j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-ac3fde898440]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1998

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