POWERFUL ENGINE: High performance 51cc 2-cycle gas engine with air volume and speed up to 600 CFM/220 mph blows air quickly and efficiently. SIMPLER PULL STARTS: Easy Start Technology and a variable speed throttle with cruise control to control air flow COMFORTABLE BACKPACK DESIGN: Fully-tensioned multi-material suspension system distributes weight evenly and comfortably between the shoulders and hips for reduced operator fatigue. Extra padded adjustable harness with chest strap. HANDHELD EFFICIENCY: Soft grip ergonomic handle designed for maximum comfort. The heavy-duty frame is equipped with an anti-vibration system for ease of use. The tube storage strap is also made for compact, space-saving storage. CONTROLLED OPERATION: Unit is designed with an ergonomic tube-mounted lever and variable speed throttle for greater control during use.