This Benchmark 19.3" 40V Max lawnmower is powered by (2) 20-Volt 4 Ah Lithium-Ion batteries and constructed of durable, lightweight poly propylene. The brushless motor helps provide more efficiency and durability. Select your ideal grass height from 1" to 3-1/8" with the 6-position single point height adjustment. The 2-in-1 mulching and rear bag options let you choose which mowing function is best for your yard. The durable 19.3" poly propylene deck and collapsible handles are ideal for storage in tight spaces. The (2) 20V 4 Ah Lithium-Ion batteries (included) are adaptable to many other Benchmark cordless power tools and outdoor products (sold separately).