Seiko Cal. 6363 - 691

The Seiko 6363-691 represents an important milestone in Seiko's 1969 lineup. With its 21mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-3718f0fd1210]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1969

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