Seiko Cal. 6663 - 152

The 6663-152 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6663 caliber with 25j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-e9c7daa7e48f]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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