Greenworks 40V 21-Inch Self-Propelled Mower/Axial Blower Combo Kit, 5Ah USB Battery and Charger Included, CK40L510

Make sure this fits by entering your model number.
Up to 45 minutes mowing runtime with a fully-charged 5.0 Ah battery. Run time varies based on grass condition and operator technique
Durable 21″ steel deck allows you to handle large areas of grass quickly and easily. 3-In-1 design allows you to mulch, rear bag, or side discharge your grass clippings