When buying LED lights, just look at the wattage? ​

no The wattage represents the power consumption, and the brightness depends on the "lumens". For example, a 5-watt LED light may be brighter than a 10 watt one, so it is more reliable to identify the lumen value on the packaging. In addition, the color rendering index (Ra) is also important. A Ra of 80 or above can accurately reproduce colors, so special attention should be paid when choosing desk lamps and kitchen lamps.