The Streamlight SL-SideSaddle USB is a rechargeable hands-free lighting system that delivers 400 lumens and 4 250 candela of bright illumination. This lightweight and compact headlamp mounts seamlessly to hats hard hats and safety helmets without interfering with visors or other accessories.Streamlight SL-SideSaddle USB Rechargeable Headlamp400 lumens output with 4 250 candela intensityDual ultra-bright front LEDs with spot flood and combined beam optionsBlue rear safety taillight for enhanced visibilityProgrammable front and rear lights for customizable function and outputHat mount included (hat not included)USB rechargeable battery systemPerfect for professionals outdoor enthusiasts and safety workers who need reliable hands-free lighting with maximum versatility and visibility from both front and rear illumination.