In addition to its powerful 520 lumen beam of light, this torch also has the ability to charge USB devices. The TIR Optic is designed for maximum light output and the Type III hard anodized aluminum protects the light in the harshest environments. With its three light settings and waterproof design, this light has the versatility to be used in any situation. The USB rechargeable lithium ion battery provides hours of flashlight use and the power to charge your devices. Ability to charge USB devices including cell phones and tablets 3 light settings- high, medium, and low; plus flashing mode and SOS mode.