This professional-grade backpack blower delivers exceptional clearing power with a 64.8 cc displacement engine generating 31.7 N of blowing force. The fuel-efficient STIHL 4-MIX® engine combines the advantages of both 2-stroke and 4-stroke technologies, offering reduced emissions and lower noise levels while maintaining impressive power-to-weight ratio. The ergonomic design features a single-handed multi-function control handle positioned directly on the blower tube, allowing complete engine control with one hand. The anti-vibration system reduces operator fatigue during extended use, while the extra-wide shoulder straps and breathable back padding provide exceptional comfort for all-day operation. Weighing just 22.3 lbs (10.1 kg), this blower achieves air velocities up to 237.6 mph (106.2 m/s) with air throughput of 686 cfm, making it ideal for clearing large areas efficiently.