Standing out in the busy streets the sirius puts out a strong 550 lumens in a wide beam for all round great visibility on the road and with excellent side visibility to help keep you safe and seen there are now more cars on the road than ever and modern motoring life is full of distractions radio satellite navigation and hands free mobile phones to name a few 80 with convenient usb charging and a quick release bracket it makes the sirius the perfect commuters light of choice cnc alumi