Seiko Cal. 0731 - 787

The 0731-787 is a sought-after Quartz piece from Seiko's golden era. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-3c8acd9eb0b5]

Also known as: Helmet, UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1985

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