... lights or sound with light ,or flashing . A, sound keychain-sound module for promotion gift or entertainment 1,custom- ... e, printing your logo if you need . B, Light keychain(LED keychain) we can make any color LED ... ( white,red,green,blue,RGB light ,etc.) C, function: when you press a button ... ,it will sound or light or sound with light. D, Packageing :one pc into a ...