The Car Key included 4 function: Joking of Shock, UV Detector, Laser Pointer, LED Light. Portable take. Feature & FunctionThe ... -in-1 key ring has for buttons for Joking of Shock, UV Detector, Laser Pointer, LED Light.Like a real Car ... key with ring easy to take, and easy to keep with keys.Uses 4 AG3 batteries ( ... Meas.: 36.5*34.5*25CM 4 in 1 Shock Car Key w/UV Detector, Laser, LED Light