How many watts does the LED light have?
The band of the picture is 5050, with a power rating of about 7.2 watts per meter. You can calculate the number of LED per meter by each LED light tube 0.2W, and multiply the 0.2W to get the watts per meter.
The band of lights in your picture is high voltage 220V's 5050 meter 60 lamp band. In theory, one meter is 14.4W, but the actual measurement is not so much.