Among all the similar watches that my daughter's classmates have, this one has the best GPS. Most parents, after comparison, went and got the same one. The battery lasts about a day, maybe a little more, the app menu is detailed - only the SIM card requires a bit of attention when placing it because it goes in no matter how you put it. Be careful with the sticker on the screen with the instructions.

The call quality is quite good. I bought 2 and especially in one of them, the battery didn't last even half a day without usage. I sent them back and they replaced the batteries and now they're fine. However, now they don't connect to the app on my phone. I will wait a few more days and I will come back. 3 stars because they are fine for calls. And when they connected to the app, the GPS had good accuracy in positioning

Everything was fine the first 2 days it worked. Suddenly it stopped working. We thought it was the battery, so we tried charging it, but it never managed to work again.

For calls, it is excellent. The GPS works well where it has good network. After 2 months of very little use, it stopped charging. I will send it back and we will see. I will come back with a new review.

Update: after 2 months of little use, it stopped charging, without misuse. After countless phone calls and emails for 2 months, I received a refund. I do not recommend it.