Seiko Cal. 7140 - 535

This Spring Drive model from 1972 features a 46mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-74ac444fd03f]

Also known as: Sportsmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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