Masterforce® Brushless 80-Volt Max tools are designed with power and performance in mind. The Masterforce® Brushless 80-Volt Max 21" Self-Propelled Mower features a durable steel deck, large 10" rear wheels, and SmartCut™ load sensing technology. Lightweight and easy to use, it has a single lever height adjustment and three-in-one operation for mulching, bagging, and discharging. Designed for durability and heavy-duty jobs, it features a brushless motor that delivers power and performance. Powered by an 80-volt 5.0Ah battery (the equivalent of a 160cc gas engine), this unit has an up to a 60-minute runtime and is designed for yards up to 1-acre. It starts with the push of a button. No need to mess with a choke or pull cord. No need to mess with oil and gas. It's powerful, efficient, lightweight, and hassle-free so you can spend less time working on your lawn and more time enjoying the results.