RGB Led Strip Lights 5050 USB Led Light WiFi APP Control Luces Led Flexible Lamp Tape for TV Backlight Room Decor Lighting DiodeSpecification :Type: USB LED strip lightVoltage: DC 5V (USB Power Supply)LED Type: SMD 5050 Light Color: RGBStrip Length: 1m / 2m / 3m / 4m / 5m /10m/15m (The longest strip is 15 meters in a roll. if you are going to buy the 30m set, we can ship 2 rolls of 15m + a connector, you need to use it to attach the light strip. ) The product hyperlink involves 4 LED strip options: 3Key controller: Led Strip + 3 Key controller ( NO Remote, NO APP). IR controller: Led Strip + 24 Key Infrared Remote controller. ( NO APP). Bluetooth controller:Led Strip + Bluetooth controller + Infrared Remote controller.(Can Use The Mobile App To Control The Light Strip)Wifi controller:Led Strip + Wifi controller + Infrared Remote controller.(Can Use The Mobile App To Control The Light Strip)Note: Remote NO Battrey(CR2025) . [Application]: TV, computer, caravan, vehicle decoration, vacation decoration I prefer you a cheerful shopping, we've ultimate after-sales service. If you have any questions about the product, please touch me (5 celebrity ranking is essential to me