Description Item Name: LED Fiber Optic Mesh Light Up Party Night Club KTV Recharge voltage: DC 5V 2A The width of optical fiber mesh: stretch to 20 inches (50cm) How to install Open fiber optic mesh and wrap it to ceiling, trees or other items you would like to light up, then use attached zip tie to fix it Instructions for use 1) Insert USB plug into the socket of battery box 2) Press button key on battery box to turn it on. Press again to change and choose 15 color modes 3) Press and hold the button to turn it off 4) Search " LUMISONATA 3.0 " on Google play or Apple store to download and install phone app. 5) Green LED on controller will blink when not connect to phone app. Turn on bluetooth on your phone and connect the controller. When controller is connected, green LED will keep on. 6) Choose preferred colors and modes via phone app, led lights also can be synced with phone mic or music. Troubleshooting Q: The product can not power on. A: Use DC 5 volts 2A phone charger (not included) to recharge the battery pack for 3 to 5 hours. Then it will restart to work. When battery pack is in charge, the red light will turn on. It will turn off after fully charged.