Brightness:   The brightness of HOD is similar/excess than regular 35W HID system.  
Installation:  Installation for HOD bulbs is a lot easier than the installation for HID system with inverters which end users cannot install by themselves.  For HOD, just need to unplug the factory bulbs in cars, place HOD bulbs in position & plug the original sockets into the end of HOD' ceramic sockets. 
Distance:  The lux of HID is shorter than the lux of our HOD.  Lux determines the distance for comfortable vision.  For example: the low-beam/high-beam is 150~200/500~600 meter on HID, but the low-beam/high-beam on our HOD bulbs is 550~650/950~1000 meter.  
Ability to pass through rain & fog:  Again HOD's lux is longer than HID's lux, so our HOD has better ability passing through rain/fog & therefore provide better driving comfort. 
Life span: 2000 hours

1)        Quartz bulbs – Will not explore like glass bulbs.   
2)        Germany filament – High quality ; will not burn easily.   
3)        Pressured mixed gas – Reduce heat while increasing brightness to maximum.   
4)        Ceramic socket – Avoid heat to melt factory’s plastic socket & provide sufficient power with thicker wires.   
5)        Easy installation -- Installation for HOD bulbs is a lot easier comparing to installation of HID system with inverters, which end users cannot install by themselves.  For HOD, just need to unplug factory’s bulbs in cars, place HOD bulbs in position & plug the original sockets into HOD' ceramic sockets.   
6)        Lumen (brightness) – Averagely, over 2,000/m while factory’s bulbs are around 1,000/m.   
7)        Clear cut line – Focus of filament is not changed in HOD, so the cut line is very clear when lights project onto wall.  No harsh to the eyes of drivers from different direction.   
8)        Distance – The lux of HID is shorter than the lux of our HOD.  Lux determines the distance for comfortable vision.  For example: the low-beam/high-beam is 150~200/500~600 meter on HID, but the low-beam/high-beam on our HOD bulbs is 550~650/950~1000 meter.   
9)        Ability to pass through to rain/fog: HOD's wavelength is larger than HID's, so our HOD has better ability passing through rain/fog & therefore, provide better driving comfort.