1)Halogen and Xenon combined 2)Two combinations:halogen high beam + HID low beam,or halogen low beam + HID high beam 3)The halogen bulb can be clear (yellow beam) or super- white 4)HID bulb is 12V/24V and 35W and halogen bulb is 12v/24v and 55W. 5)12V/24V,35W available