Product specification: 4 Inche 1 Battery 4 Inche 2 Batteries 6 Inch 1 Battery 6 Inch 2 Batteries Usage method: 1: First press the safety start button on the back 2: Then press the button on the lower part of the arm and hold it still. Advantages: 1: High power copper core motor makes it easier to prune and cut trees 2: There is a fast cooling system to make your work safer. 3: The machine is light and flexible. You can carry it in your pocket. 4: High performance high-capacity battery, 2-3 hours charging, 3 hours endurance. 5: The protective cover is upgraded, and the baffle can be adjusted to prevent wood chips or chains from hurting our arms. The mini chainsaw is a newly designed product. For the subsequent life of it and better usage of sawing, it is recommended that the chainsaw be cooled for 3 minutes after 10 minutes of use when it is used for the first and tenth time. Only in this way can the chainsaw work best in sawing after the tenth time. Easy to carry:The chainsaw is equipped with alithium batteries of 2000mAH. The Cordless Power Battery lets you say goodbye to the old wired chainsaw. Work quickly and efficiently:The 6-inch chainsaw design can be used for trees with a size of 4-8 inches, and the high-quality chain can reach a speed of 6m/s, helping you to saw wood faster. Equipment maintenance only needs simple oiling and wiping.