Seiko Cal. 5615 - 991

The 5615-991 is a sought-after Quartz piece from Seiko's golden era. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-db277142d63c]

Also known as: Rally, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1979

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