This is a set including a Seventeen light stick, two light stick cases, a power bank, etc. The light stick lights up, but Bluetooth connection has not been confirmed, so please understand this before purchasing. Please note that the power bank has a DK sticker on it. If you don't want the flower on the light stick, please let me know and I will remove it before shipping. Please refrain from purchasing if you are sensitive to used items, as it has been some time since everything was purchased.