Allow us to introduce you to your favorite new tool ? the WORX cordless 40-volt MAX lithium powered 12? cordless chainsaw. The ultra-powerful . ultra-efficient 40V Share Volt battery delivers extra power to tackle even the toughest cutting tasks and extend runtime. The 12-inch bar give you plenty of reach for challenging cuts while also maintaining a friendly . usable size for novice chainsaw operators. Speaking of novice operators . an innovative auto tensioning system that keeps the chain tight and safe during use will benefit new and expert users alike. You?ll feel like you can cut all day . thanks to an overmold soft grip handle that gives you the utmost comfort and control and also reduces fatigue you would otherwise feel with a less cushioned handle. In addition to the auto tension feature . the chain is also treated to an automatic lubrication mechanism that keeps the chain well-oiled and operating smoothly and seamlessly . even after hours of use. And you WILL be able to cut for hours . thanks to the 40V MaxLithium battery which delivers more capacity . longer run times . no self-discharge . no slow loss of power . less weight . more power and quicker charging times. Charge the battery within 3 hours and it?s ready when you need it.