Instructions of Using the App--Bluetooth App Control (LED LAMP) * Therere two QR Codes stick on the products controller box, scan the QR Code to download the app. * If you have problems by scan the QR code to download, please download the app directly on Google lay Store for An driod phone (Over An driod 4.3), i Phone can download directly on App Store. (App named "LED LAMP" ) * Must be sure open the Bluetooth on your phone and with power on of the lights first, and search the signal and connect , then you can use app control the lights After service (One Year Warranty): * Please contact us in 7 days if theres any problems about the lights (Human-destroy or problems caused by your careless using like hitting the tree or stones, or the lights and parts lost or damaged during driving time are not in warranty). * Metal rings broke is NOT in warranty, please be carefully when using or installing. * Must be sure to show clear pictures and video at our demand once problems happened, we need to send to technology department to check out. * After we confirm its quality problem, we will resend you the parts with your new order, or some of them could send out by epacket for free which takes 25-35 working days (if they are bigger or long items cant sent by epcaket), or if you want the parts to be resent faster you are expected pay extra US25-US35 or more shipping cost to sent out by DHL depends on items weight. * Once we confirm the problems, must destroy the problem parts at our demand, and show us pictures before we resend new the parts for warranty . * Dont accept return if they dont have any quality problems or just because of you dont like them.