Up to 20 years' lifetime

Bulbs that use modern technologies have a longer lifetime than standard bulbs. With a 20-year lifetime, one lamp replaces 20 standard bulbs. So they save money and last longer, year after year. The lifetime is based on the average usage of 2.7 hours per day or 1000 hours per year. This average is influenced by the usage during different seasons (dark winter vs. light summer), the weather conditions (sunny vs. rainy day) and on the room where the lamp is used (short usage in bathroom vs. long usage in living room).