2. Lock it with 3 screwswith a screwdriver. 3. Bending bracket. 4. Insert the bracket ball head into the slot and tighten the nut 5.USB cable connecting to the power supply. 6. Touch switch. USB cable length: 5M/196.85Inch Size：The actual manual measurement size may have some errors. The actual size is subject to the actual product.Please allow 0-2CM/0-0.787inch error due to manual measurement. Due to the unavoidable collision of the product during transportation or storage, it may cause slight wear and tear on the product, but please don't worry, they will not affect the normal use of the product. If you mind, please purchase carefully. Please be aware.