material: pc + abs; led chip type: smd 2835 chip, color temperature: warm white (2700-3500k) /cold white(5500-6500k), color rendering index: (ra) >80, beam angle(deg): 120, working temperature: -20 to 60, install style: surface mounted. we will send the lamp with strong package, but sometimes it will have some problem, if it have damaged or can't wrok when your received, please take steps by following: 1.send us a message and tell us what is wrong with the lamp. 2.also attaching ps or possibly send us video of test. modern ceiling lamps for living room,simple ceiling lights,modern ceiling lights for hallway,wifi ceiling fan,move lamp,ceiling light fixtures for living room,ceramic ceiling lamp.syi