... -span reachs 50,000 hours.4), Built-in or external constant current driver.5), Overtemperature automatic protection function. When environment temperature is more ... or the voltage is above 30V, the output current of built-in constant current driver will be shutdown in order to protect the LED ... only Color Available: W,G,Y,R,B. All lights with 2 meter cable.2), Paking details: 48pcs/carton for 3W ...