This USB Rechargeable Tactical Flashlight uses a CREE® LED rated at 750 lumens on high for one hour of run time, extending to 250 lumens on medium (two hours) and 80 lumens on low (five hours). At only 4.7 inches long and weighing only 4.4 oz, this metal tactical flashlight is multi-functional, cycling between high, medium, and low modes, with strobe function when you double click and release from any mode.