Our cool new tumblers are definitely Amazing!! This tumbler has a Bluetooth speaker connected to the bottom so you can start the party anywhere! A fantastic option for light music on your study desk and even for your work desk to listen to a little inspirational music while you stay hydrated.  or turn it up to the max and fill the room with sound! this tumble can easily disconnect for cleaning or even to use separately. the charge is included so you can keep the party going all day long! We even have our speaker option in Glow in the dark and they are simply stunning! It glows bright and looks great in the dark. perfect for the night life!