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.