Multi Safety Protection-Our cordless mini chainsaw SAFETY LOCK & SAFETY BEZEL designed to ensure safety. You must press the lock button and switch button simultaneously to start the chainsaw,which can effectively avoids misoperations and potential risks.If the mini electric chainsaw stops working after operating for a while,that's the motor has an Overheat Protection function.Please unplug the battery and restart it. One Hand Using- Our handheld chain saw with battery powered is lightweight and portable to carry,handheld design, comfortable to hold in hand and easy to control.it is easy to operate for women and hold it for a long time is not tiring. Higher Power Motor & Large Battery- This upgraded mini rechargeable chainsaw, power increased by 30%, power consumption reduced by 20%, fast cutting & improves efficiency. You can choose 1 Battery or 2 Batteries. Highly Efficient Cutting-Our rechargeable mini chainsaw uses a high-quality guide chain that has been deeply hardened to ensure smooth cutting. The wooden teeth design can make the chain saw stuck on the branches, cutting more efficiently and faster. The chain is hardened, 5000rpm per minute, wooden teeth design offering smooth and fast cutting speed.