Philips Daytime Running Light Bulb - 12085LLC1: Philips Daytime Running Light Bulb - 12085LLC1 is a specialized bulb designed to improve visibility during the day or in other low-light conditions. This bulb is designed to last up to four times longer than a standard bulb and is made with a special filament that is designed to be more resistant to shock and vibration. It also features a unique optics design that helps to focus the light in the right direction for maximum visibility.