The RYOBI 40V HP Brushless 21" Self-Propelled All-Wheel Drive Multi-Blade Mower delivers more power than a 170cc gas mower, making it a true gas replacement. Ideal for up to ¾ acre, it runs for up to 70 minutes with the included (2) 40V 6Ah batteries. Its 3-in-1 CROSS CUT Multi-Blade System reduces clumping when mulching, provides even dispersal when side discharging, and maximizes bag space when collecting fine clippings. The brushless motor and advanced electronics adjust blade speed to prevent bogging, tackling tough cuts with ease. Part of the WHISPER SERIES, the mower is 85% quieter than gas models, ensuring quiet operation. The all-wheel drive system offers enhanced maneuverability and control on all terrains, while SMART TREK self-propelled technology adjusts speed to match your pace, reducing fatigue. The handles collapse quickly for compact, vertical storage, and any 40V battery works with any 40V product in the system. Additionally, the RYOBI 40V HP Brushless 2-Tool Combo Kit includes a 40V HP Brushless 16" String Trimmer, a 40V HP Brushless 650 CFM Blower, a 40V 4Ah Battery, and a 40V Fast Charger. The trimmer delivers more power than a 27cc gas model, running for over 45 minutes, and the blower outperforms a 26cc gas blower, offering 650 CFM and 160 MPH for tackling tough yard work. The Mower and Combo Kit is backed by a 5-year tool warranty and a 3-year battery warranty.