✔After-sales service Warranty:If you have any question,please contact with us.Mellif offers 12 months replacement if any quality problems. ✔Mechanical chain brake for operator safety. ✔MULTIPLE SAFETY DESIGN:Overheating protection to ensure battery's life.Chain baffle and Dual switch design to ensure the safety during the use process. One thumb switch for the trigger safety and one-finger trigger for operation. ✔EFFICIENT GARDENING TOOL:The electric chainsaw is equipped with brushless copper motor,strong power 450W,and peak power can be 850W,18000rpm.Sawing faster and more time-saving.Excellent heat dissipatioon,auto cooling to ensure longtime working. ✔HIGH QUALITY CHAIN::High-temperature hardened chain ,sharper and higher hardness, fast and smooth sawing without jamming.This mini chainsaw comes with self-contained wrench design, easy to disassemble and install. ✔BATTERY:The mini chainsaw is compatible with Dewalt 18v XR battery well(attention:No battery),such as DCB182,DCB183,DCB184,DCB187,DCB189. ✔ONE HANDHELD CHAINSAW:Mellif cordless battery chainsaw is lighter than gasoline saws.Just 2 pounds.Reasonable weight can help us finish our task more easily.Cordless design makes the handheld chainsaw more convenient than wired chainsaw,without limitation for location.