This is an EL Mask with the function of Steady on and flashing.We have 10 colors including(Transparent blue/ Blue/ Red/ Pink/ Orange/ Yellow/Lemon green/Green/White/Purple)Item description:1. Package includes:Masks * 1Controller * 1(Not included) 2 AA batteries2. There are 4 control modes: stable light, slow flash, fast flash, off3 This mask is made of high PVC Quality and cold light The, without UV damage, there are no side effects on the human body. 4. Attach the power cord clip to your pocket or clothes. 5 masks can be used on any occasion, such as parties, parties, discos, birthdays, festivals and events. Please kindly note:1 there may be 1-3cm difference due to manual measurement and 3-5g for the difference between different Colors2 Due to the screen difference, the color may be a little different than you expect, please allow!