The 5.11 Tactical Response XR1C Flashlight is crafted from anodized aerospace-grade machined aluminum. High setting of 750 lumens and a low setting of 50 lumens. Max distance is 140 meters and runtime of is up to 1h 40m on high. Operates on CR123A batteries (included) or an 18650 rechargeable Li-ion battery (not included). IPX7-rated for submersible water resistance. Impact-resistant up to 2 meters.