1. LED Flashllight bulb is adoptable to wide range voltage. LED flashlight bulb is installed inside high efficient LED driver. Within the stipulated voltages, the bulb is safe to use and the brightness is seldom influenced. 2. The lifespan of LED bulb is over 50000 hours 3. LED flashlight bulb is vibration-resistant. 4. Compared with incandescence bulb, LED bulb is more bright under the same power. 5 .LED bulb is energy-saving. The working hours is longer than other bulbs with the same charge. 6. LED bulb can replace the current flashlight bulb, and it assembles light through light assembling cup. 7. It is environment friendly and energy-saving product 8 It is faster to swift the bulb if damaged. No speciality needed. 9. Adoptable to the standard holder, and replaceable to the current flashlight bulb.