3-speed modes& self-stop function The switch on the bottom of the Cordless Wrench can easily adjust 3 speeds of 1000/1800/2450r/min to meet various working demands. Self-stop function prevent the nuts from dropping off or damage and save the battery's power. LED Light This brushless wrench is equipped with a led light. When the surrounding environment is dark or in an insufficiently cared environment, you can turn on the led light. It can provide care so that you can continue to work. Ergonomic Handle The comfortable handle is ergonomic, which can reduce your workload when you are working, and you will not feel too tired even if you work for a long time.