Seiko Cal. 5634 - 247

The Seiko 5634-247 represents an important milestone in Seiko's 1966 lineup. Powered by the 5634 caliber with 20j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-e6fd138e85a0]

Also known as: Sumo, Goldfeather

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1966

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