The Greenworks ST40B410 Brushless String Trimmer is the trimmer you grab when you want to accomplish your trimming work quickly and easily. The cordless, battery-powered design gives you the freedom to roam anywhere in your yard, and it’s ultra-lightweight without a gas engine. This string trimmer has a 12-inch cutting path, making quick work of your trimming tasks. The durable brushless motor is as powerful as a gas motor, without the hassle of refueling and exhaust. This trimmer features a 45-minute run-time and includes a 4Ah USB battery and a charger. The battery features a USB port that charges all portable electronic devices including phones and tablets. Spend less time working in your yard and more time enjoying it, thanks to the Greenworks Cordless ST40B410 String Trimmer.