It cannot be adjusted with a mobile phone. I went to an electronics store, bought a SIM card, and still it does not connect. They told me that it needs a factory reset and to speak to the seller. I contacted the store where I bought it and they told me that they don't know how to do it. Unfortunately, I didn't read the reviews where it seems that it is generally not good...

Good product for its price, only the GPS shows it in a different part of the city and its signal is unreliable. Also, it wouldn't turn on for no reason. I spoke with Skroutz and the staff was very helpful, they asked me to return it and they will send me a new one. I hope the new one is good and the previous one was just defective. Congratulations to Skroutz for their flawless and professional replacement process!

I ordered 2 watches, one of which worked for a total of 10 days within a 2-month period. After 6 months, it was used for one more day and then it stopped charging and turning on. So, it worked for a total of 11 days.
The second watch, with similar usage, worked for a total of 21 days and then the screen stopped turning on and showed nothing.
In conclusion, it was a waste of money.

The GPS doesn't work, we are at home and it shows us in the other side of the city and when I called, they boldly told me that it's my phone's fault. Mind you, I have a very good phone!

Don't even bother ordering it.....third time we tried to charge it and it simply doesn't charge anymore... We haven't even had it for a month... It hasn't been exposed to water or dropped... the only thing that dropped was the 30 euros.....

I ordered it through Skroutz for my son (8 years old).
During the holiday season, I received it in 2 days (from Karditsa to Xanthi).
It cost 33 euros, including shipping expenses.
It would be helpful for beginners if they mentioned that a new SIM card is needed (new number).
It is very easy to use.
Very useful for kids.
We loaded the app on both mine and my wife's smartphones with one email.
We can call him and he can call us back (10 numbers that we add and remove ourselves).
We can send him messages (he CANNOT).
The map is 99% accurate.
The price-product ratio is very satisfactory.
It may cost less in China, but I don't know what I will pay for customs.
And the store was excellent in the communication we had for clarification.