1. Lamp holder: P13.5 or E10 2. Optional color: white, red blue, green 3. Input voltage: 3.2~9V One piece of high efficient and constant current LED driver which set inside bulbs enable bulbs be used in a wide-range voltages and keeps the brightness going constantly 4. LED power: 3W 5. White LED intensity: 160~180LM LED brightness is higher than incandescent's bulbs under the same power supply 6. Built-in: constant current LED driver 7. Lifespan: >50,000hours 8. Efficiency: >80% 9. Dimming level: 100%-30%-5%-SOS 10. Environmental friendly, energy saving and shock-resistant products 11. The output power of bulb driver will be controlled automatically by different bulb temperature, which will enable the bulb to fall down the temperature and work in the best state 12. When connect the anode and cathode of power supply reversely, although the bulbs do not work, it will not be damaged