Seiko Cal. 7140 - 537

Released in 1972, the Cal. 7140 with design code 537 was part of Seiko's domestic market collection. With its 19mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-37edca09cdec]

Also known as: UFO, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1972

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