Redback E435C 40V Brushless Motor Cordless Blower 4-Speed,121MPH - With 6AH Battery,2ACharger 40V Lithium Ion Battery and brushless motor offer powerful performance; No-Load Speed 25000 rpm, Max Wind volumn: 385 cfm, Max Wind Speed: 121mph; Blower With 6Ah Battery and 2A Charger;