Single Color XKchrome Smartphone App-enabled Bluetooth Upgrade Controller - Universal for 12V Single Color LEDs for Car Truck Motorcycle Underglow Interior Halos Demon Eyes The only of its kind! World's first single color smartphone controller Universal for all 12V Single Color LEDs Smartphone BLE 4.0 app controlled Dual-zone control- control 2 sets of LEDs independently. Music Sync- sync your lights to your music library for an awesome light effect.