Default [Q] Q

hello all and how are you
i have i Q
what deference between galaxy ace gt-s5830 and galaxy ace gt-s5830L

and what full specifications about galaxy ace 5830L ?

because i have galaxy ace when i show it after draw battry out i see it's model 5830L
and when i open it it's appear gt-s5830 with out L

thank and waiting for answer