Seiko Cal. 6663 - 863

This Automatic model from 1978 features a 46mm Stainless Steel case. Powered by the 6663 caliber with 29j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-937910406d1e]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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