Seiko Cal. 4417 - 903

The Seiko 4417-903 represents an important milestone in Seiko's 1965 lineup. Powered by the 4417 caliber with 17j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-0cf3b0c01a3d]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

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