This things has worked great for me, but has not been without its problems.
I have a basset hound and they tend to wander around, So a gps collar is a godsend.
I received the gps collar as a Christmas present, and immediately put it on my puppy. It works for the most part. When she got out of the yard, I know immediately when it sent me a push notification on my iPhone that she was away.
I did the list dog feature, and even though it took a long time to track her, or to get it to update her position, but when I finally got it to work, I was able to go EXACTLY to her location and pick her up.
The biggest problem I have is getting the collar to update its position, but it still for some reason immediately tells me when she is away, or back with me, or back near the hub.
If it can do those things that quickly, why would it be that hard to get the real-time god tracker to update where she is?
I know a lot of these things are the collar connecting to my phone with Bluetooth or WiFi and using my phones gps position to update where she is.
But besides the issues I have had with updating position, it works like a charm, and has saved my puppy getting to far away by alerting me she is away.
I would highly recommend this product if you have a dog who is a super escape artist like mine.
I am positive that with updates they will improve the product.