The detail feature list                                                                                                                 Item No.:R1050AStandard DescriptionCustomizedDimensionSpot Φ34x53mm;Base Φ50mm ;             Neck Φ10mmYes (length only)Input 100-240VAC50/60Hz-SDCM5 StepYesLuminous Efficiency60lm/Watt-Lumens depreciationIES LM80 standard-Moveable structureFlexible-Profile materialAluminium alloy-Profile finishingAnodizing / Plating / PaintingYesFinishing color optionBlack / White/ Silver /ChromeYesOutlet cable#22 DC cableYesConnectingAC cable with tin coating terminalYesIP gradeIP20-AccessoriesMounting bracket and screws-Cut-out sizeOnly a small hole for cable through-PackageFactory standard industry packingYesWarranty Period3 Years- The detail description and instruction                                                                                 *   Can be rotated 360 °to meet the needs of multiple angles*   flexible metal bellows can do the whole direction of rotation, free bending, adjusting the angle,    flexible and convenient!*  Soft light illuminates the keyboard without affecting other people around;*   bright white LED can ensure clear vision in the dark, at night or in your online gaming time,    turn off the lights, Dimension line drawing                                                                                                            Installation line drawing                                                                                                                Integrating sphere test report                                                                                                    Photometric test report                                                                                                              Factory Profile                                                                                                                             Certificates