The BOOST R, taking the massively prevalent form of the Trace R and designing a rear light with twice the burn times with just a 10-gram increase in weight. This rear end guardian comes with a high-capacity Lithium-Ion battery it produces both a powerful output and long burntimes. Featuring DayBright pulse pattern to cut through the distractions of busy roads. With long burn times the BOOST R is the perfect partner for your weekly commute or packing adventure, both day and night.