The innovative Ring features a circular COB LED, which generates 60 lumens of light output.Details:1 pce 15 chips circualr ring COB high brightness LED,CNC aluminium heat sink,Rechargeable lithium polymer battery 3.7v / 280 mAh,USB rechargeable,6 modes,Quick release patented universal bracket fits all round bars and Aero bars,2 x Orings 20-35mm , 35-52mm,Low battery, cahrging & fully charged indicator,Automatoc chrged cut off system,Side visibility,IPX4,Belt clip bracket, ideal for clothing and bags,270 degrees total light angle,Weight: 21g,44mm x 31.2mm x 16.5mm.Runtimes:Overdrive 60 lumens - 1 hour 50 mins,High 35 lumens - 3 hours 30 mins,Standard 10 lumens - 60 hours 40 mins,100% flashing 60 lumens - 3 hours 25 mins,20% flashing 10 lumens - 13 hours 30 mins,Strobe 30 lumens - 8 hours 10 mins.