Powerful And Efficient Cutting Well built with 1000 watts super power BRUSHLESS motor, the mini chainsaw takes only 10 seconds to cut through a 12inch thick branch. Greatly Save your valuable time, energy and money for trimming yard. Efficient Brushless Motor This electric chainsaw has a strong BRUSHLESS motor that doubles its lifespan and reduces energy usage by 50%. It also produces only 35% of the noise compared to similar products. Experience uninterrupted and efficient cutting performance for effortless backyard or garden transformations. Rechargeable Long Life Battery Pack The DEVONIC electric chainsaw is equipped with 2pcs 21V 4000mAh high-energy lithium battery pack that's removable and rechargeable.