Seiko Cal. 6633 - 903

The Seiko 6633-903 represents an important milestone in Seiko's 1968 lineup. Powered by the 6633 caliber with 20j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-fb7fcad8ea9e]

Also known as: Samurai, Monster

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1968

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