Blackburn: TO-BE-SEEN The Grid 2’fer is a high-powered Front and Rear Light. A quick double-click of the power button switches it from White to Red. With four mode options, you can choose if you need high lumen power or extended run time. Ready for those commuting in the city, riding the open roads, or heading to their local trail.175 max lumens front / 55 max lumens rearCOB led technology for powerful wide array to be seenSilicone strap wrap mount fits a wide variety of sizesRemovable pack and belt attachment clipAmber color peripheral side visibility ringFOUR MODESHigh Solid – full power, all the timeConstant Pulse – high power, always-on while pulsingFast Strobe – high alert, high speed pattern for max attentionECO Flash – extends pulse and strobe modes by 2 hoursFRONT MODE/RUNTIME:High Solid: 2 hours at 175 lumensConstant Pulse: 6 hours at 100 lumens (+2 hours auto-eco)Fast Strobe: 7 hours at 40 lumens (+2 hours auto-eco)ECO Flash: 25 hours at 40 lumensREAR MODE/RUNTIME:High Solid: 1.75 hours at 55 lumensConstant Pulse: 6 hours at 35 lumens (+2 hours auto-eco)Fast Strobe: 6.5 hours at 20 lumens (+2 hours auto-eco)ECO Flash: 22 hours at 20 lumens