Have a party with these USB Bluetooth Music-Syncing LED String Fairy Lights. Includes built-in tech to connect to your music and create light-show that flashes in time Connect to your phone via Bluetooth to pick your lighting mode without moving Also includes a remote control or you can use the switch on the USB cable With 16 million colours and brightness to choose from - perfect for adding ambience Great for adding to the Christmas tree or use them all year round. Choose from 3 options: 5m, 10m or 20m Materials: copper wire and LED bead bulbs Waterproof level: IP20 Power Supply: USB Voltage: 5V      Buying Options: 9.99 pounds instead of 39.99 pounds for the 5m Lights - save 75% 14.99 pounds instead of 49.99 pounds for the 10m Lights - save 70% 19.99 pounds instead of 59.99 pounds for the 20m Lights - save 67%