You get 270 degree visibility from the little light which is essential for added protection at crossings and junctions.Details:1 pce 15 chips circular ring COB high brightness LEDCNC aluminium heat sinkRechargeable lithium polymer battery 3.7v / 280mAhUSB rechargeable6 modesQuick release patented universal bracket fits all round bars and Aero bars2 x O rings 20-35mm , 35-52mmLow battery, charging & fully charged indicatorAutomatic charge cut off systemSide visibilityIPX4Belt clip bracket, ideal for clothing and bags270 degrees total light angleWeight: 21g44mm x 31.2mm x 16.5mmRuntimes:Overdrive -  60 lumens - 1 hour 50 minsHigh - 35 lumens - 3 hours 30 minsStandard - 10 lumens - 60 hours 40 mins100% flashing - 60 lumens - 3 hours 25 mins10% flashing - 10 lumens - 13 hours 30 minsStrobe - 30 lumens - 8 hours 10 mins