1.There are 4 modes of control: stable light, slow flash, fast flash, off 
2. This mask is made of high quality PVC and El cold light, no UV damage, no side effects on the human body. 
3. Clip the power cord clip to your pocket or clothing. 
4. Masks can be used on any occasion, such as parties, rave parties, discos, clubs, birthdays, festivals and events. 
5.Package Included: 1*Masks(Not Included) 2*AA5 Batteries 

Please Kindly Note: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little difference from what you expect, please allow it.