The TraceR is a super bright USB charging rear light. Its compact design, high power, wide angle visibility and ultra reliability have made it an award winning product. ,The TraceR features Optimum Mode Selector with 3 brightness modes in constant or pulsing beams. ,It has a Fuel Gauge using a traffic light system to make it clear when it's time to recharge so you can be safe and seen.,Exposure Lights have always been designed to get the maximum light from minimum sized unit and Cable Free Design with single button operation ensures this is maintained.,The Trace and TraceR can be bought together in the Trace TraceR Pack and the TraceR can also be mounted under the saddle using the Saddle Rail Bracket..