37.5W Lumiko Xenon Blue/White is available in high and low watt bulbs. Low watt= factory wattage and high watt ranges depending on the bulb. 80 watt for low beam and 100 for high beam, Unless your bulb has high/low in one. This has a balance of white and slight blue tint. Lumiko bulbs give you a balance of brightness, style and reliablity. Kicks butt over sylvania silver stars! For longevity, choose the low watt. For more brightness, choose high watt. If you choose high wattage, a harness upgrade is recommended.