About Product:Name: infrared laser light purple lights Yanchao white LED triple color: Red Green Blue Purple Silver Black and yellow mixed color custom delivery: a large number of orders can be custom logo can replace Keychain built-in 3 button battery for the first time using open the back cover and remove the insulation sheet. Suitable: can play red laser light purple Yanchao lights small lamps three practical functions of convenient carrying can be hung on a key chain.