it's for LBS 1 km near by tower range. working fine for LBS positioning. GPS accuracy is not good. So does not give exact location. anyways I am happy with LBS positioning and Battery backup. good for small kids and fit on small hands and safe for eyes because does not have Touch screen and which is good for eyes of kids. because kids donot play with watch. that saves battery backup and gives 48 hours positioning upto 1 km difference.