DUAL SWITCH TECHNOLOGY â Access any of the three variable lighting modes and strobe via the tail cap or the head-mounted switch. Up to 18,000 candela (peak beam intensity) and up to 160 lumens measured system output. Up to 5.5 hours run-time. Optimized electronics provides regulated intensity Length â 8.85 " (22.48 cm) Weight â 12.8 oz (364 grams)