In general, the wattage can be found in the Specifications section on the website as the image shown below:
Please notice that this parameter is for the whole strip light. If you want to know the wattage for per meter, just divide it by the length of the strip light. For example, the wattage of a 5M strip light is 36 watts, then the wattage for 1 meter is 36/5=7.2 Watts.
Note: The wattage will be lower in practical use as there will be wastage when the strip light is working.