The TXT lightstick ver.2 features a telescopic design that allows for the extension and retraction of the stick's length. Please refer to the "Product Description" or "Videos" section below for instructions on how to extend the length of the stick. STICK LENGTH ADJUSTMENT : To switch to usage mode, grab the bottom of the stick and carefully pull it until it clicks into place. To switch to portable mode, carefully push the bottom of the stick until it clicks into place. PRODUCT COMPONENTS : Out box, Lightstick, Dust Bag, Strap, 5 Photo Cards (The Light stick is powered by 3 AAA Batteries, which you must purchase separately.) TOMORROW X TOGETHER lightstick ver.2 will support Wireless synchronization, Default Mode, Color shaking mode, Bluetooth mode, Discover MOA Mode. ✅Battery is NOT included / Size: 107*78*231mm / Material: PC, ABS TXT OFFICIAL LIGHTSTICK VERSION 2