High Wattage bulbs provide a longer service life compared to standard HELLA bulbs. These bulbs are Off-road use only.. All bulbs are produced under HELLAs stringent testing requirements, you know this is a brand that can be trusted. High wattage bulbs have an excellent luminous efficiency and are considered to be environmentally friendly because of their longer service life.. Original equipment quality bulbs you can trust from a global leader in automotive lighting technologies for more than 100 years.. The ideal bulbs for professionals who travel off-road, or make special demands on light power, such as those in agriculture, forestry, on building sites or even 24-hour racing.