Instructions for use: 1. Product connection (using an auxiliary tool): During the performance, enter the seat number on the official support post and automatically change the color to match the performance on stage for a more enjoyable performance. (Depending on the situation, some shows are excluded) 2. Lighting control: With Bluetooth connection, you can connect the official TWICE-enabled device and your own smartphone, control brightness, color and light mode, and create an ambient atmosphere. 3. It applies to aspects of different members: You can change your own app by setting the member image as the apps background screen. 4. Connect to the YouTube channel: You can watch different videos through the double YouTube channel. 5. Check the remaining battery capacity of the bar: You can check the remaining amount of Candybost batteries associated with the app. selection of functions: Long light, slow forward scrolling, fast forward scrolling, fast flashing 1/2/3/4, four degrees Bright LED mode: LED RGB LED Bluetooth version: Bluetooth 5.0 (working range - 10 m) Rod Size: 111 x 264 x 52 mm Silver color Plastic Dimensions: length 27 cm, lamp width 10,5 cm, handle width 2,7 cm Design: round, very fashionable Material: plastic Application: suitable for children and adults, very suitable for parties, schools, concerts and other occasions. The package includes: 1 x V2 Lightstick 1 random photo card 1 wrist strap 1 instruction Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.