Professional grade LED technology powered by 3x 1800mAh 3.7V Lithium-ion rechargeable batteries. Built-in power bank is perfect for charging small portable devices. A 90-degree pivoting headlamp provides multiple lighting angles.  Offers high and low dimming level options, easy to adjust comfortable headband and includes a micro USB charging cable. Charge Time: 5-6 Hours Run Time (High): 3.5 Hours - 1500 Lumens Run Time (Low): 6 Hours - 480 Lumens Run Time (Strobe): 3 Hours - 0 - 1500 Lumens Batteries: (3) 3.7V - 21800mAh Li-ion Lumens: 1500 & 480 Lumens Rechargeable: Yes CA Residents: Click Here for Prop 65 Warning SHOP OTHER FLASHLIGHTS