Klarus XT20 Dual Head XM-L U2 Cree LED Flashlight, Grey Lumen Output: 2000 Lumens/ 1350 Lumens/ 700 Lumens / 80 Lumens Runtime: 2hrs / 4.5hrs / 12hrs / 40 hrs Beam Distance: 347m Battery Type:2*18650/4*CR123A Dual-Button Tail Switch/250g/Self-defense and CQB