Nitecore EA41 1020 Lumen Cree XM-L2 U2 LED Flashlight Compact Searchlight with LumenTac Diffuser 1020 lumens maximum brightness and 366 yards beam Easy to use dual mode switch and power switch; Five output levels & Strobe SoS Use commonly available 4x AA Batteries (not included); Low battery warning Easily switch from throw to flood light with the included diffusor Include light, holster, lanyard, O-ring, LumenTac(TM) Diffuser Filter Turbo: 1020 lumen / 1 hr 45 min High: 580 lumen / 2 hr 45 min Medium: 160 lumen / 12 hr Low: 50 lumen / 30 hr Lower: 1 lumen / 400 hr Length: 4.61 inch (117mm) Head: 1.57 inch (39.9mm) Tube: 1.65 inch (41.8mm) Weight: 5.33 oz (151 g)