[(high torque of 6n*m and variable speed)] 4v electric screwdriver is equipped with 3-speed torque, and the maximum torque can reach 6n*m, providing strong and stable power output for the cordless screwdriver. level 1 is suitable for smaller screws and level 3 is suitable for larger screws. equipped with 25pcs crv magnetic bits, suitable for different working requirements, tighten and loosen various screws quickly and easily during diy, repair and home assembly. [(forward/back switch)] forward/reverse button helps you freely change the direction of the screw from the drive to removal, by tightening or loosening the screw. the no-load speed of 250rpm and the maximum torque of 6n*m can meet the needs of your daily home maintenance work. long press the switch to lock the machine to prevent it from being turned on accidentally. [(usb rechargeable and wireless design)] built-in 2000mah large-capacity lithium battery. when connected to usb for charging, the charging light shows the power in real time and when charging is complete, 3 green lights are lit when charging is complete. type-c charging port makes it easy to charge quickly from usb ports such as laptops, power banks and car chargers. [(led lighting function)] front led lighting, which lights up when the driver is working, making it easier to work in dark environments or dark corners late at night. the bit extension bracket and flexible extension shaft are suitable for doing work in narrow spaces and hard-to-reach places. [(package content)] 1 x 4v cordless screwdriver, 24 x 1 inch crv bits, 1 x 2 inch crv bit, bit extension holder, flexible shaft, 1 x storage box, 12 months warranty. enventor is committed to providing satisfactory customer service to our customers. if you have any questions during use, please contact us in time and we will reply you within 24 hours.