Using the Bosch GSR12V - 300HXB22 screwdriver is a breeze. First, insert the battery into the screwdriver. You can choose between the two - speed settings based on your task. The low - speed setting (0 - 460 rpm) is great for high - power jobs like driving screws into tough materials. The high - speed setting (1,750 rpm) is for quicker tasks. Adjust the 20 + 1 clutch settings to control the torque and avoid damaging fasteners. To change bits, use the quick - change 1/4 In. hex drive chuck. When working in dark areas, turn on the LED light. For safety, always wear appropriate protective gear. When not in use, store the screwdriver in the included carrying bag. Keep the batteries charged and store them in a cool, dry place. Clean the screwdriver regularly with a dry cloth to keep it in good condition.