... life span In-built driver ,constant current output 300*1200 Led grid lightSpecs:Size:300(L)×1200(W)×45(H)mmvoltage:100 ... save ,low power, high efficient LED as light source,No RF,NO UV,No flickeringHigh color rendering indexIn-built driver,constant ... current output assure the safety and reliablity of LED illuminationLong life span ...