Installation Method: 1. First install the pentagonal and pulley base, connect the screws with the base parts firmly 2. Connect the lamp head and arm with screws firmly 3. Insert the lamp head and arm into the pole at the same time (screws need to be tightened) Features: Lamp Power?12W Maximum Brightness?11300LM Average Color Temperature: 6800-7200k Product Height?105cm/41.37in Product Weight?4.5kg/9.9lb