Seiko Cal. 6648 - 436

The Seiko 6648-436 represents an important milestone in Seiko's 1972 lineup. Powered by the 6648 caliber with 32j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-ccd316d59d32]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1972

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