Brushless DC motor with high power to weight ratio generates less heat buildup and is ideal for prolonged cutting applications Low noise level at only 104 dB(A) with zero emissions for operator comfort and reduced environmental impact Toolless bar mounting and chain tension adjustment for quick and easy set up and adjustment on the jobsite MAKITA 40V MAX XGT LI-ION BRUSHLESS 16″ CHAINSAW KIT W/ 1 5AH BATTERY