Foursevens

Foursevens was founded in 2009 by David Chow. Its Quark series was among the first high-performance mass-produced LED flashlights, winning a following for practical design, flexible battery options and premium optics. David Chow announced the brand's closure in late 2017, and in early 2018 Foursevens was acquired by Prometheus Lights (led by designer Jason Hui). Today Foursevens runs as a core product line under Prometheus Lights (DarkSucks) — keeping its original spirit while upgrading to high-CRI LEDs, premium drivers and refined materials (copper, titanium and mil-spec aluminum).