After all the hype around this "GREEK" product, when I looked into it a bit more I saw that the manufacturer is called HaveDeer and not Hyperloq. What I mean by looking into it more is that it says so on the device as soon as you turn it on. This manufacturer sells them on AliExpress for 5-10€. As for build quality, it's very cheap plastic; regarding performance, I haven't tried it yet as I just got it, but I will come back if I have anything negative to say about its performance

It doesn't work, many times it doesn't show the correct location even for long distances of kilometers

So far it works well although there was one time I couldn't locate it for quite a while while it was in a crowded area

Good quality materials, affordable price, and a wide variety. In my case, disconnections happen often with the only solution being the reset of the tracker, which goes against its main function and purpose of purchase, which is the continuous tracking of personal items. A good substitute and not an alternative in my opinion.

It very often loses its position, disconnects, and essentially you can't use it as it may not have connected for hours or even days.

I bought a key and a NeoPro Premium. The premium works fine. The key, on the other hand, I reset every day. The company's response was explanatory regarding how it works.

Update: in a phone call with the company, they accepted the defective product and sent me a new one at no charge. Congratulations on the service