Dewalt, 20v compact chain saw, low kick back 12" bar & chain, high efficiency brushless motor to maximize run time & motor life, tool free tensioning & bar tightening knob for proper bar clamping force, compact, lightweight design at just 9 lb with battery, up to 90 cuts per charge on 4x4 pressure treated wood using a 20v max 5 ah battery, includes1 5 ah battery, 1 charger, hard bar cover, part of the 20v max system of tools.