Inspired by the world of aviation, Bell & Ross took their unique case design from the cockpit instruments used in aircraft. The bold dials are extremely legible and the case designs are crafted from materials like ceramic to high-grade stainless steel. Due to the reliability and precision of Bell & Ross watches, the brand has been associated with the French military and police force, with special edition timepieces being created for units like French Civil Defense Bomb Squad to the French Naval Air Force. The Bell & Ross BR 03-92 Nightlum is powered by the BR-Cal.302. automatic movement which offers a date complication. The case is 42mm in diameter and is crafted from matt black ceramic, a material reknowned for it's scratch resistant qualities. The black dial features arabic numerals with Superluminova coating for visibility in low-light conditions.