Seiko Cal. 0740 - 503

The Seiko 0740-503 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-4b2909764aae]

Also known as: UFO, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1972

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