1.Package Includes;Masks*1Controller*12.There are 4 modes of control: stable light, slow flash, fast flash, off3. This mask is made of high quality PVC and El cold light, no UV damage, no side effects on the human body.4. Clip the power cord clip to your pocket or clothing. 5. Masks can be used on any occasion, such as parties, rave parties, discos, clubs, birthdays, festivals and events.