WorxECO Pacesetter 19 Inch 36V Lawn Mower WG789 Is An Electric Mower That Is Cordless. It charges overnight and is ready to go. Removable battery. Cuts up to 12,500 sq. ft. on a charge. Adjusts to your walking pace and handle height. Mulches, side discharges and bags. Adjustable mowing height. Collapses for compact storage. If purchased in store Worx is fully assembled. For shipping purposes, some assembly is required.