A ten-star seller. I have never come across such a kind and patient seller on Aliexpress. I had a lot of new questions about which product to buy and he always answered them extremely quickly. The necklace arrived extremely quickly and looks great. And then he answered every question I had about using it. My mistake is that I didn't ask if it works with the iPhone I use (it says nice android). The product does not have an iPhone phone app. The seller made me happy with a message that says that in about 30 days, the application will also be available for the iPhone (if it is not, I have to buy an android, which will be used for hunting). I recommend the seller. I haven't tried the product yet. When I try it, I will provide an additional grade.
I am very happy with the device. It appears to be quality built. I have tested it at a distance of 3.5 km and it worked perfectly. A constant beeping sound when collar is not moving can be a little annoying but device could easily be turned off. I am considering to disable the beeper. You can feel electric stimulation at level four and not before that which I think is a nice safety feature, preventing you from accidentally zapping your dog if you keep device at level one. It would mean that you have to accidentally go all the way to level four an then press shock...Antenna seems very thick and sturdy. It came to Serbia in maybe ten days because it is stored in a warehouse in Greece. So far, I am very pleased and would never consider buying Garmin for more than four times greater price.