Solo 471 53cc 3 HP 2-Stroke Gas Powered Commercial Grade Backpack Blower With Tube Mounted Throttle Solo 2-cyle engine, electronic ignition Anti-vibration system to absorb engine vibration Noise level 64.5 dB A Combines user friendly features with German engineering for superior performance. A quiet, fuel efficient air blower with a running time of up to two hours on a single tank of fuel