Great for parties, fancy dress, concerts, festivals, night clubs stag and hen parties. You tube or tiktok, virtual or physical celebrations or parties. Also great for your staff to wear if you own or run a bar or club. YOU ARE BUYING ONE NEW BLACK T-SHIRT WITH Either a LIPS Design or SPEAKER EQUALIZER SIGN /LOGO ON . Complete with LED flashing panel light reacts to music and sound . On and off Control and sensitivity adjustment for the sensitivity of music to light. Has a sound sensitivity control to take you all the way from loud anthem beats to the chill out room. 4 x AAA batteries required (more powerful than the 2 battery models sold elsewhere). Batteries are not included. UK stock available now! PLEASE NOTE THE SIZES RUN SMALLER SO IF YOU ARE M ON UK/USA SIZE YOU SHOULD GET THE LARGE .