The 18V x2 LXT (36V) Brushless chain saw (model XCU03Z) is powered by two 18V LXT batteries, so users get 36V power & run time but without leaving the strongly-preferred 18V battery platform. & with the efficient Makita outer rotor Brushless motor with direct drive system, users get high power efficiency that is equivalent to a gas chain saw. XCU03Z has a 14” guide bar & the Makita-built motor with variable speed delivers 0-3, 940 FPM For increased cutting speed, but with less noise. It has zero emissions & reduced maintenance. The XCU03Z features Makita extreme Protection Technology (XPT) & star protection Computer controls.