Sunwayman XM-L2 D40A Cree 980 Lumens LED Flashlight, Black Brand-new Dual-button Side Switch System, slightly depress output ranging 30-980 lumens, Police Strobe, Aviation Signal, SOS, Strobe, Moon Mode Low: 30 Lumens (31hrs) Turbo: 980 Lumens (To avoid overheating, the light will enter High mode automatically after 3minutes continuous use) High: 550 Lumens (1.7hrs) Mid: 220 Lumens ( 4hrs )