... 4-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 (Included) Laser max ... N.W.: 9KGS Carton Meas.: 36.5*34.5*25CM 4 in 1 Shock Car Key w/UV Detector, Laser, LED Light