New Philips Ultinon Pro9100 headlight bulbs
7 April 2023 
Lumileds says the Philips Ultinon Pro9100 LED range offer up to 350% more brightness. They also feature a colour temperature of up to 5800K, which is intended to reduce fatigue and the risk of eye strain for the driver. The Philips Ultinon Pro9100’s new one-piece bulb design is also intended to offer easy installation. The bulbs are compatible with both reflector and projector headlamps and also work with 12V and 24V electrical systems. However, the Ultinon Pro9100 LED retrofit bulbs are non-ECE homologated for public roads, so should be used off-road only.